ℹ️ New book available now!: Portable Docker: Build and Deploy Anywhere with WireGuard Tunneling
This is a collection of Docker Compose projects, consisting of
Traefik as a TLS HTTP/TCP/UDP
reverse proxy, and other open-source self-hosted applications and
services behind it. Each project is in its own sub-directory
containing its own docker-compose.yaml
and .env-dist
sample config
file. This structure allows you to pick and choose which services you
wish to enable. You may also integrate your own external Docker
Compose projects into this framework.
All (http) apps are secured with automatic TLS certificates (Let's Encrypt or Step-CA), along with configurable self-hosted authentication middleware (mTLS, OAuth2, or HTTP Basic auth), as well as user group authorization middlewares. Even non-TLS apps may be secured with the optional VPN (Wireguard) support.
Each project has a Makefile
to simplify configuration, installation,
and maintainance tasks. The setup for any sub-project is as easy as
running:
make config
and interactively answering some questions to
generate the .env
file automatically.make install
to deploy the service containers.make open
to automatically open your web browser to the newly
deployed application URL.Under the covers, setup is pure docker compose
, with all
configuration derived from your customized .env
file.
All of these projects are configured soley via environment variables written to Docker .env files.
The .env
files for each application instance are to be kept secret
because they include things like passwords and keys, and these should
be kept on a secure workstation and not commited to git (they are
ignored via .gitignore
) . Each project includes a .env-dist
file,
which is a sample that must be copied to create your own secret .env
file and edited according to the example. (Or run make config
to run
a setup wizard to create the .env
file for you by answering some
questions interactively.)
For containers that do not support environment variable configuration,
a sidecar container is included (usually called config
) that will
generate a config file from a template including these environment
variables, and is run automatically before the main application starts
up (therefore the config file is dynamically generated at each
startup).
This project stores all application data in Docker named volumes as opposed to host mounted directories. Host-mounted directories are
considered an anti-pattern and will never be used in this project,
unless there is a compelling reason to do so. For more information
see Rule 3 of the 12 factor app
philosophy. By following this rule, you
can use Docker from a remote client (like your laptop, accessing a
remote Docker server over SSH). More importantly, you can ensure that
all of the dependent files are fully contained by Docker itself
(/var/lib/docker/volumes/...
), and therefore the entire application
state is managed as part of the container/volume lifecycle.
Install Docker Server on your own public internet server or cloud host. You may also install to a private server behind a firewall (but in this case be sure to setup the Traefik ACME DNS Challenge, because the default TLS challenge requires an open port 443 public to the internet).
See SECURITY.md for a list of security concerns when choosing a hosting provider.
As one example, see DIGITALOCEAN.md for instructions on creating a secure Docker host on DigitalOcean.
If you need a semi-private development or staging server, and want to be able to share some public URLs for your services, you can protect your services by turning on Traefik's HTTP Basic Authentication, OAuth2 Authentication, mTLS with Step-CA and IPAllowlist middlewares, or you can make an exclusively private Traefik service with a Wireguard VPN.
For local development purposes, you can install Docker on a raspberry pi or you can install Docker in a virtual machine (in all scenarios you will remotely control Docker from your native workstation), this ensures that your development environment is deployed in the same way as you would a production server. Never install Docker on your native workstation/desktop! (Or, if you do, never give your normal user account any docker privileges!) See _docker_vm for details on how and why to install Docker in KVM/Qemu. Please note that Docker Desktop is not currently supported because it does not support host networking, and the Traefik configuration relies upon this (if you know a way around this, please open an issue/PR). (If you don't use Linux on your workstation, you may have better luck installing Docker yourself inside of a traditional virtual machine like VMWare or Virtualbox, and then setting up an SSH service so you can access the VM remotely from your native desktop (the docker client works just fine from WSL2); or even easier would be to install Docker on a raspberry pi and connect it on your LAN.
You need to bring your own internet domain name and DNS service. You
will need to create DNS type A
records (or AAAA
records if using
IPv6) pointing to your docker server. There are many different DNS
platforms that you can use, but see DIGITALOCEAN.md
for one example.
It is recommended to dedicate a sub-domain for this project, and then
create sub-sub-domains for each application. This will create domain
names that look like whoami.d.example.com
, where whoami
is the
application name, and d
is a unique name for the overall sub-domain
representing your docker server (d
is for docker
, but you can make
this whatever you want).
By dedicating a sub-domain for all your projects, this allows you to
create a DNS record for the wildcard: *.d.example.com
, which will
automatically direct all sub-sub-domain requests to your docker
server.
Note that you could put a wildcard record on your root domain, ie.
*.example.com
, however if you did this you would not be able to use
the domain for a second instance, but if you're willing to dedicate
the entire domain to this single instance, go ahead.
If you don't want to create a wildcard record, you can just create
several normal A
(or AAAA
) records for each of the domains your
apps will use, but this might mean that you need to come back and add
several more records later as you install more projects, (and also
complicates the TLS certificate creation process) but this would let
you freely use whatever domain names you want.
This system does not include a network firewall of its own. You are
expected to provide this in your host networking environment. (Note:
ufw
is NOT recommended for use with Docker, nor is any other
firewall that is directly located on the same host machine as Docker.
You should prefer an external dedicated network firewall [ie. your
cloud provider, or VM host]. If you have no other option but to run
the firewall on the same machine, check out
chaifeng/ufw-docker
for a partial fix.)
With only a few exceptions, all network traffic flows through one of
several Traefik entrypoints, listed in the static configuration
template (traefik.yml
) in the
entryPoints
section.
Each entrypoint has an associated environment variable to turn it on or off. See the Traefik configuration for more details.
Depending on which services you actually install, and how they are configured, you may need to open these ports in your firewall:
Type | Protocol | Port Range | Description |
---|---|---|---|
SSH | TCP | 22 | Host SSH server (direct-map) |
HTTP | TCP | 80 | Traefik HTTP entrypoint (web; redirects to websecure) |
HTTP+TLS | TCP | 443 | Traefik HTTPS entrypoint (websecure) |
TCP socket | TCP | 1704 | Traefik Snapcast (audio) entrypoint |
TCP socket | TCP | 1705 | Traefik Snapcast (control) entrypoint |
RTMP(s) | TCP | 1935 | Traefik RTMP (real time message protocol) entrypoint |
SSH | TCP | 2222 | Traefik Forgejo SSH (TCP) entrypoint |
SSH | TCP | 2223 | SFTP container SSH (TCP) (direct-map) |
TLS | TCP | 5432 | PostgreSQL mTLS DBaaS (direct-map) |
TCP+TLS | TCP | 6380 | Traefik Redis in-memory database entrypoint |
TCP socket | TCP | 6600 | Traefik Mopidy (MPD) entrypoint |
HTTP | TCP | 8000 | Traefik HTTP entrypoint (web_plain; explicitly non-https) |
TLS | TCP | 8883 | Traefik MQTT (TLS) entrypoint |
WebRTC | UDP | 10000 | Jitsi Meet video bridge (direct-map) |
VPN | UDP | 51820 | Wireguard (Traefik VPN) (direct-map) |
The ports that are listed as (direct-map)
are not connected to
Traefik, but are directly exposed (public) to the docker host network.
For a minimal installation, you only need to open ports 22 and 443. This would enable all of the web-based applications to work, except for the ones that need an additional port, as listed above.
See DIGITALOCEAN.md for an example of setting the DigitalOcean firewall service.
Later, after you've deployed things, you can audit all of the open
published ports: from the root project directory, run make show-ports
to list all of the services with open ports (or those that
run in the host network and are therefore completely open. You will
find traefik and the wireguard server/client in this latter category).
Each sub-project directory also has a make status
with useful
per-project information.
By default, Docker will only reserve enough IP addresses for a total of 30 user-defined networks. This means that, by default, you can only deploy up to 30 apps per docker server.
If you would like more than 30, you can increase the range of IP
addresses that Docker reserves. On your Docker server, edit
/etc/docker/daemon.json
(create this file if it does not exist), and
merge the following configuration:
{
"default-address-pools": [
{"base": "172.17.0.0/16", "size": 24}
]
}
and restart the docker daemon, or reboot the server.
Your local "workstation" is assumed to be a Linux desktop/laptop computer, or another Linux system that you remotely connect to via SSH:
You need to install the following tools on your local workstation:
docker
client program and ssh
are all you need
installed on your workstation to connect to a remote docker server.
For Mac/Windows, install Docker Desktop, or use your own Linux
Virtual Machine and install Docker Engine.)docker compose
is already installed. For
Linux, it is a separate installation.)For Arch Linux, run: sudo pacman -S docker docker-compose docker-buildx
For Debian or Ubuntu, you should strictly follow the directions from the links above and install only from the docker.com third party apt repository (because the docker packages from the Ubuntu repositories are always out of date).
You do not need to (and perhaps should not) run the Docker Engine on
your local workstation. You will use the docker
client exclusively to
control a remote docker server (or VM). To turn off/disable the
Docker Engine on your worksation, run the following:
## Disable local Docker Engine:
sudo systemctl mask --now docker
Following the buildx installation guide, and run the installation:
docker buildx install
The Makefiles have extra dependencies in order to help configure and
manage your containers. These dependencies are optional, but strongly
recommended. (The Makefiles are strictly convenience wrappers for
creating/modifying your .env
files, and for running docker compose
commands, so if you would rather just edit your .env
files by hand
and/or run docker compose
manually, these dependencies may be
skipped):
bash
, make
, sed
, xargs
, and
shred
.openssl
(for generating randomized passwords)htpasswd
(for encoding passwords for Traefik Basic Authentication)jq
(for processing JSON)sshfs
(for mounting volumes used by the sftp container)xdg-open
(Used for automatically opening the service URLs in
your web-browser via make open
. Don't install this if your
workstation is on a headless server, as it depends on
Xorg/Wayland. Without installing xdg-open
, it will degrade to
simply printing the URL that you can copy and paste.)wireguard
(client for connecting to the traefik
wireguard VPN)curl
(for downloading an installing external dependencies:
script-wizard)inotify-tools
for any any project that has implemented
dev-sync, which can be used to synchronize
local files into container volumes.On Arch Linux, run this to install all these dependencies:
pacman -S bash base-devel gettext git openssl apache xdg-utils jq sshfs wireguard-tools curl inotify-tools w3m moreutils
For Debian or Ubuntu, run:
apt-get install bash build-essential gettext git openssl apache2-utils xdg-utils jq sshfs wireguard curl inotify-tools w3m moreutils
For Fedora, run:
dnf install bash gettext openssl git xdg-utils jq sshfs curl inotify-tools httpd-tools make wireguard-tools w3m moreutils
Make sure that your local workstation user account is setup for SSH
access to the remote docker server (ie. you should be able to ssh to
the remote server root
account, or another account that has been
added into the docker
group). You should setup key-based
authentication so that you don't need to enter passwords during login,
as each docker
command will need to authenticate via SSH.
PasswordAuthentication no
in the server config.When set for a remote Docker context, the docker
command will create
a new SSH connection for each time it is run. This can be especially
slow for running several commands in a row. You can speed the
connection time up, by enabling SSH connection multiplexing, which
starts a single background connection and makes new connections re-use
this existing connection.
On your workstation, create or edit your existing
${HOME}/.ssh/config
file. Add the following configuration (replacing
ssh.d.example.com
with your own docker server hostname, and root
for the user account that controls Docker):
Host ssh.d.example.com
User root
ControlMaster auto
ControlPersist yes
ControlPath /tmp/ssh-%u-%r@%h:%p
(The hostname ssh.d.example.com
relies upon the wildcard
*.d.example.com
or an explicit A
record having been created for
this hostname.)
Note: if you use a workstation that goes to sleep, or loses network
connectivity, you may find that your shared+multiplexed SSH
connections will sometimes become zombies and stop communication. Get
used to running killall ssh
before trying to restablish the
connection.
On your local workstation, create a new Docker
context
to use with your remote docker server (eg. named d.example.com
) over
SSH:
docker context create d.example.com --docker "host=ssh://ssh.d.example.com"
docker context use d.example.com
(To benefit from connection multiplexing, make sure to use the exact
Host name [ssh.d.exmaple.com
] that you specified in your
${HOME}/.ssh/config
)
Now whenever you issue docker
commands on your local workstation,
you will actually be controlling your remote Docker server through
SSH, and you can easily switch contexts between multiple server
backends.
For example, I have three docker contexts, for three different remote Docker servers:
$ docker context ls
NAME DESCRIPTION DOCKER ENDPOINT
d.rymcg.tech * ssh://ssh.d.rymcg.tech
docker-vm ssh://docker-vm
pi ssh://pi
(The *
indicates my current context.)
I can select to use which context I want to use:
$ docker context use docker-vm
Current context is now "docker-vm"
(This is a permanent setting that will survive a workstation reboot. Use the same command again to switch to any other context.)
git clone https://github.com/EnigmaCurry/d.rymcg.tech.git \
${HOME}/git/vendor/enigmacurry/d.rymcg.tech
cd ${HOME}/git/vendor/enigmacurry/d.rymcg.tech
You may clone to any path you like, but the path suggested above is a vendor neutral way of organizing third party repositories, with the intention of making the same path work on all machines.
Run the configuration wizard, and answer the questions:
## Run this command inside the root source directory of d.rymcg.tech:
make config
Running make config
, in the root project directory, writes the main
project level variables into a file named .env_${DOCKER_CONTEXT}
(eg. .env_d.example.com
) in the root source directory, based upon
the name of the current Docker context. This file is excluded from the
git repository via .gitignore
.)
All of the Makefiles depend on a helper utility called
script-wizard, which
is automatically installed the first time you run make config
.
This will also check your system for the dependencies and alert you if you need to install something.
The ROOT_DOMAIN
variable is saved in .env_${DOCKER_CONTEXT}
and
will serve as the default root domain of all of the sub-project
domains, so that when you run make config
in any of the sub-project
directories, the default (yet customizable) domain will be
pre-populated with this root domain suffix.
You can have multiple .env_${DOCKER_CONTEXT}
files, one for each
Docker server, named after the associated Docker context. To switch
the current .env file being used, change the Docker context:
docker context use {CONTEXT}
Each of the sub-projects have their own README.md
. You should
install Traefik first, as almost all of the others depend
on it. After that, install the whoami service to test that
things are working correctly.
Install these first:
Install these recommended backbone applications next:
Install these other services at your leisure/preference:
You can create a new application by using any other application as an example, (whoami is the most basic one).
Bespoke things:
Also check the _attic directory for a collection of old and broken things.
As alluded to earlier, this project offers multiple ways to control Docker:
.env
files by hand, and running docker compose
commands yourself (this is a usable, but lower level, base
abstraction).make
targets that edit the .env
files automatically
and runs docker compose
for you (this is the author's preferred
method, and the one that most of the documentation will actually
use).d.rymcg.tech
CLI script, which runs the make
targets from any working directory. (This method also includes
extra features such as creating your own new projects from
templates.)All of these methods are compatible, and they will all get you to the
same place. The Makefiles offer a more streamlined approach with a
configuration wizard and sensible defaults. Most of the sub-project
README files reflect the make
command style for config. Editing the
.env
files by hand still offers you more control, with more freedom
for experimentation, and this option always remains available.
Each project has a Makefile
that helps to simplify installation and
maintainance. You can use the Makefiles to automatically edit the
.env
files and to start the services for you (and this way you won't
have to run any docker commands by hand).
The most important thing to know is that make
looks for a Makefile
in your current working directory. make
is contextual to the
directory you are in.
cd
into the sub-project directory of an app you want to install.README.md
file.make config
.env_${DOCKER_CONTEXT}_default
file will be created/updated for
you (named with your current docker context, eg.
.env_d.example.com_default
). The answers are pre-populated with
default values from .env-dist
(and based upon your ROOT_DOMAIN
specified earlier). You can accept the suggested default values, or
use the backspace key and edit the value, to fill in your own
answers._default
, refers to the
instance of the
service (each instance has a different name, with _default
being
the default name. This default name is typical only when you are
deploying a single instance, otherwise you should use a unique name
for each instance.).env_${DOCKER_CONTEXT}_default
.make install
to start the services. (this is the same thing as
docker compose up --build -d
)make open
(requires xdg-utils
, otherwise it will print the
URL and you can copy and paste it).make help
(or just run make
) for a list of all the other available
targets, including make status
, make start
, make stop
and make destroy
. Be sure to recognize that make
has tab completion in Bash :)make status
in the root directory of the cloned
source. This will list all of the installed/running applications.make config
does not literally create a file named .env
, but
rather one based upon the current docker context:
.env_${DOCKER_CONTEXT}_default
. This allows for different
configurations to coexist in the same directory. All of the make
commands operate assuming this contextual environment file name, not
.env
. To switch between configs, you switch your current docker
context: docker context use {CONTEXT}
.
During make config
, you will sometimes be asked to create HTTP Basic
Authentication passwords, and these passwords can be optionally
saved into a file named passwords.json
inside the sub-project
directory. This file is a convenience, so that you can remember the
passwords that you create. passwords.json
is stored in plain
text, but excluded from being checked into git via .gitignore
.
When you run make open
the username and password stored in this file
is automatically applied to the URL that the browser is asked to open,
thus logging you into the website account automatically. To delete all
of the passwords.json files, you can run make delete-passwords
in
the root directory of this project (or make clean
which will delete
the .env
files too).
For a more in depth guide on using the Makefiles, see MAKEFILE_OPS.md
d.rymcg.tech
CLI script (optional)By default, both make
and docker compose
expect you to change your
working directory to use them, and so this is sometimes inconvenient.
You can work around this by using make -C
or docker compose -f
,
but another option is to use the eponymous d.rymcg.tech
script that is included in this repository.
In addition to letting you run any project's make
targets from any
working directory, this shell script also offers a convenient way to
create external projects from a
skeleton template, and to create shorter command aliases for any
project.
To install the script, you need to add it to your PATH
shell
variable, and at your option, evaluate the Bash shell tab completion
script:
#### To enable Bash shell completion support for d.rymcg.tech,
#### add the following lines into your ~/.bashrc ::
export PATH=${PATH}:${HOME}/git/vendor/enigmacurry/d.rymcg.tech/_scripts/user
eval "$(d.rymcg.tech completion bash)"
Once installed, run d.rymcg.tech
to see the command help text.
## Main d.rymcg.tech sub-commands:
cd Enter a sub-shell and go to the ROOT_DIR directory
create Create a new external project
make Run a make command for the given d.rymcg.tech project name
## Documentation sub-commands:
help Show this help screen
list List available d.rymcg.tech projects
(not including external projects, unless you symlink them into ROOT_DIR)
readme [PROJECT] Open the README.md for the given project name
readme Open the main d.rymcg.tech README.md in your browser
readme raspberry_pi Open the RASPBERRY_PI.md documentation
readme makefile_ops Open the MAKEFILE_OPS.md documentation
readme security Open the SECURITY.md documentation
readme digitalocean Open the DIGITALOCEAN.md documentation
readme license Open the LICENSE.txt software license
You can use this script to run the make targets for any of the bundled projects, usable from any working directory, and with full tab completion support:
d.rymcg.tech list
(retrieve list of all available projects)d.rymcg.tech make -- status
(view status of all installed
projects)d.rymcg.tech make traefik config
(run the Traefik make config
target)d.rymcg.tech make traefik install
(run the Traefik make install
target)d.rymcg.tech make whoami logs
(run the whoami make logs
target)d.rymcg.tech make piwigo logs SERVICE=db
(you can also add any
variable assignments, just like with make
)d.rymcg.tech make [PROJECT_NAME] ...
is a simple wrapper for make -C ~/git/vendor/enigmacurry/d.rymcg.tech/${PROJECT_NAME} ...
(the
script will detect the correct path that you cloned to) so that you
can run all of the same things as outlined in
MAKEFILE_OPS.md, but from any directory. The
special project placeholder value -
(any number of consecutive
dashes) indicates to use the root Makefile rather than any
particular project Makefile.
You can get into the root d.rymcg.tech directory quickly, from anywhere:
## This enters a subshell and changes the working directory to the d.rymcg.tech root:
## (You can also specify a second argument to specify the sub-directory.)
d.rymcg.tech cd
Press Ctrl-D
to exit the sub-shell and jump back to wherever you
came from.
From any working directory, you can create a new, external project, from an external repository URL:
# This creates a new project directory in your current working directory:
# It will ask you to enter the name of the project and choose the template.
# Optional 2nd and 3rd args will skip the asking: PROJECT_NAME TEMPLATE_REPO
d.rymcg.tech create
Check out the example Python Flask template repository.
Open any project's README file directly in your web browser:
## Open the main README
d.rymcg.tech readme
## Open the Traefik README
d.rymcg.tech readme traefik
You can add additional command aliases to your shell (put these in
your ~/.bashrc
after the eval
line that loads the main
d.rymcg.tech
script):
## Alternative alias to shorten `d.rymcg.tech` to simply `d`:
__d.rymcg.tech_cli_alias d
You can make project specific aliases:
## Example project alias: creates a shorter command used just for the Traefik project:\
## e.g., `traefik config`, `traefik install`
__d.rymcg.tech_project_alias traefik
If you have created an external
project (eg. named mikeapp
), you can
create a command alias for it:
## Example external project alias:
## e.g., `mikeapp config`, `mikeapp install`
__d.rymcg.tech_project_alias mikeapp ~/git/mikeapp
You can also do context specific aliases:
## Example context alias: creates a shorter command used just for the given Docker context:
## e.g., `sentry make traefik config`, `sentry make traefik install`.
__d.rymcg.tech_context_alias sentry
To get a synopsis of all of these completion commands, run:
d.rymcg.tech completion
docker compose
by hand (optional)This project was originally designed to be a pure docker compose
project, and it still is. The make
commands or the d.rymcg.tech
wrapper script are the recommended methods to use, however you can
still use docker compose
by hand if you wish.
For all of the containers that you wish to install, do the following:
cd
to the project directory containing
docker-compose.yaml
.env-dist
to .env
.env
according to the example and comments.docker-compose.override.yaml
file by hand, copying from the template given in
docker-compose.instance.yaml
(If the project does not have this
file, you can skip this step.) This ytt
template is mainly used for the service container labels, and has
logic for choosing which Traefik middlewares to apply. So you just
need to remove (comment out) the lines that don't apply in your
case. The override files are not committed into git, as they are
normally dynamically generated by the Makefiles and rendering from
the template on the fly. If you want to maintain these files by
hand, you can remove the exclusion of them from the
.gitignore and commit them with your own forked
repository.docker compose up --build -d
(This is the same thing that make install
does)When using docker compose
by hand, it uses the .env
file name by
default. To use any other filename, specify the --env-file
argument
(eg. when deploying multiple instances).
By default, each project supports deploying a single instance per
Docker context. The singleton instance environment file is named
.env_${DOCKER_CONTEXT}_default
, which is contained in each project
subdirectory (eg. whoami/.env_d.example.com_default
).
If you want to deploy more than one instance of a given project (and
to the same docker context, and from the same source directory), you
need to create a separate environment file for each one. The
convention that the Makefile expects is to name your several
environment files like this: .env_${DOCKER_CONTEXT}_${INSTANCE_NAME}
(eg. whoami/.env_d.example.com_foo
).
Not every project supports instances yet (nor does it make sense to in some cases), it is opt-in for each project, by including the Makefile.instance file at the top of their own Makefile.
By default, all of the make
targets will use the default
environment, but you can tell it use the instance environment instead,
by setting the instance
(or INSTANCE
) variable:
make instance=foo config # Configure a new or existing instance named foo
make instance=bar config # (Re)configures bar instance
make instance=foo install # This (re)installs only the foo instance
make instance=bar install # (Re)installs only bar instance
make instance=foo ps # This shows the containers status of the foo instance
make instance=foo stop # This stops the foo instance
make instance=bar destroy # This destroys only the bar instance
# Show the status of all instances of the current project subdirectory:
make status
It may seem tedious to repeat typing instance=foo
everytime (and its
easy to forget!), so there is a shortcut: make instance
, which will
ask you to enter an instance name, and then enter a new sub-shell with
the environment variables set for that instance, making it now the
default within the sub-shell, so you don't have to type it anymore:
# Use this to create a new instance (or to use an existing one):
# Enter a subshell with the instance temporarily set as the default:
make instance
Example:
## Example terminal session for creating a new instance of whoami named foo:
$ cd ~/git/vendor/enigmacurry/d.rymcg.tech/whoami
$ make instance
Enter an instance name to create/edit
: foo
Configuring environment file: .env_d.rymcg.tech_foo
WHOAMI_TRAEFIK_HOST: Enter the whoami domain name (eg. whoami.example.com)
: whoami-foo.d.rymcg.tech
WHOAMI_NAME: Enter a unique name to display in all responses
: foo
Set WHOAMI_INSTANCE=foo
## Entering sub-shell for instance foo.
## Press Ctrl-D to exit or type `exit`.
(context=d.rymcg.tech project=whoami instance=foo)
whoami $
Inside the sub-shell, the PS1
Bash prompt has been set so that it
will remind you of your current locked instance:
(context=d.rymcg.tech project=whoami instance=foo)
. You have access
to all of the same make
targets as before, but now they will apply
to the instance by default:
## Inside of the foo instance sub-shell ...
make config # (Re)configures foo instance
make install # (Re)installs foo instance
make destroy # Destroys foo instance
etc...
To exit the sub-shell, press Ctrl-D
or type exit
and you will
return to the original parent shell and working directory.
When you create a new instance, make config
will automatically run. You
may switch to an existing instance with either: make instance
or
make switch
(the former will re-run make config
while the latter
will not).
Most of the time, when you create multiple instances, the only thing
that needs to change is the environment file
(.env_${DOCKER_CONTEXT}_${INSTANCE}
). Normally the
docker-compose.yaml
is static and stays the same between several
instances.
However, sometimes you need to configure the docker-compose.yaml
of
two instances a little bit differently from each other, but mostly
stay the same. You may also wish to modify the configuration without
wanting to commit those changes back to the base template in the git
repository.
You can override each project's docker-compose.yaml
with a
per-docker-context docker-compose.override_${DOCKER_CONTEXT}_default.yaml
(default instance) or a per-instance
docker-compose.override_${DOCKER_CONTEXT}_${INSTANCE}.yaml
file.
You can find an example of this in the sftp project. Each
instance of sftp will need a custom set of volumes, and since this is
normally a static list in docker-compose.yaml
, you need a way of
dynamically generating it. There is a template
docker-compose.instance.yaml that
when you run make config
it will render the template to the file
docker-compose.override_${DOCKER_CONTEXT}_default.yaml
containing
the custom mountpoints (this file is ignored by git.) The override
file is merged with the base docker-compose.yaml
whenever you run
make install
, thus each instance receives its own list of volumes to
mount.
Reference the Docker compose documentation for Adding and overriding configuration regarding the rules for how the merging of configuration files takes place.
Because the .env
files contain secrets, they are to be excluded from
being committed to the git repository via .gitignore
. However, you
may still wish to retain your configurations by making a backup. This
section will describe how to make a backup of all of your .env
and
passwords.json
files into a GPG encrypted tarball, and how to
clean/delete all of the plain text copies.
First you will need to setup a GPG key. You can do this from the same workstation, or from a different computer entirely:
# Create gpg key (note the long ID it generates, second line after 'pub'):
gpg --gen-key
# Send your key to the public keyserver:
gpg --send-keys [YOUR_KEY_ID]
On the workstation you cloned this repository to, import this key:
# Import your key from the public keyserver:
gpg --receive-keys [YOUR_KEY_ID]
From the root directory of your clone of this repository, run:
make backup-env
The script will ask to add GPG_RECIPIENT
to your
.env_${DOCKER_CONTEXT}_default
file. Enter the GPG pub key ID value
for your key.
A new encrypted backup file will be created in the same directory
called something like
./${DOCKER_CONTEXT}_environment-backup-2022-02-08--18-51-39.tgz.gpg
.
The GPG_RECIPIENT
key is the only key that will be able to read
this encrypted backup file.
Now that you have an encrypted backup, you may wish to delete all of
the unencryped .env
files. Note that you will not be able to control
your docker-compose projects without the decrypted .env files, but you
may restore them from the backup at any time.
To delete all the .env files, you could run:
## Make sure you have a backup of your .env files first:
make clean
To restore from this backup, you will need your GPG private keys setup on your worstation, and then run:
make restore-env
Enter the name of the backup file, and all of the .env
and
passwords.json
files will be restored to their original locations.
You may create your own external projects, and/or integrate your existing docker-compose projects, including from external git repositories, and have them use the same d.rymcg.tech framework.
d.rymcg.tech
, but it can be).docker-compose.yaml
, docker-compose.instance.yaml
, Makefile
,
.env-dist
, .gitignore
and README.md
. As an example, you can
use any of the d.rymcg.tech sub-projects, like whoami, or
take a look at the
flask-template.Create the Makefile
in your own separate repository so that it
includes the main d.rymcg.tech Makefile.projects
file from
elsewhere:
## Example Makefile in your own project repository:
# ROOT_DIR can be a relative or absolute path to the d.rymcg.tech directory:
ROOT_DIR = ${HOME}/git/vendor/enigmacurry/d.rymcg.tech
include ${ROOT_DIR}/_scripts/Makefile.projects
include ${ROOT_DIR}/_scripts/Makefile.instance
.PHONY: config-hook # Configure .env file
config-hook:
@${BIN}/reconfigure_ask ${ENV_FILE} EXAMPLE_TRAEFIK_HOST "Enter the example domain name" example.${ROOT_DOMAIN}
@${BIN}/reconfigure_ask ${ENV_FILE} EXAMPLE_OTHER_VAR "Enter the example other variable"
By convention, external project Makefiles should always hardcode the
enigmacurry git vendor path: ROOT_DIR = ${HOME}/git/vendor/enigmacurry/d.rymcg.tech
,
(but you may want to use your own directory if you have forked this
project and you have introduced unmerged changes):
## As long as everyone uses this same ROOT_DIR, then we can all share the same configs:
## (You might also create this path as a symlink, if you don't like this convention):
ROOT_DIR = ${HOME}/git/vendor/enigmacurry/d.rymcg.tech
A minimal Makefile
, like the one above, should include a
config-hook
target that reconfigures your .env
file based upon the
example variables given in .env-dist
. This is what the user will
have to answer qusetions for when running make config
for your
project.
Now in your own project directory, you can use all the regular make
commands that d.rymcg.tech provides:
make config
make install
make open
# etc
If you have a question, or have some feedback, you can join us on the Matrix chat room. You can also use the discussions interface on github.
Feature suggestions, bug reports, and pull requests, are all welcome on the github repository, but only open source self-hostable software is acceptable for inclusion in this repository.