fatal: Not a git repository (or any parent up to mount point /opt/nodemcu-firmware)

[woodcarving]

livecd Ubuntu 16.04 LTS, after installing git and docker (17.05.0-ce):

cd ~
git clone https://github.com/nodemcu/nodemcu-firmware.git

Cloning into 'nodemcu-firmware'...
remote: Counting objects: 14202, done.
remote: Compressing objects: 100% (52/52), done.
remote: Total 14202 (delta 23), reused 30 (delta 12), pack-reused 14138
Receiving objects: 100% (14202/14202), 100.65 MiB | 3.67 MiB/s, done.
Resolving deltas: 100% (9499/9499), done.
Checking connectivity... done.

sudo docker run --rm -ti -v `pwd`:/opt/nodemcu-firmware marcelstoer/nodemcu-build

Unable to find image 'marcelstoer/nodemcu-build:latest' locally
latest: Pulling from marcelstoer/nodemcu-build
9fb6c798fa41: Pull complete 
3b61febd4aef: Pull complete 
9d99b9777eb0: Pull complete 
d010c8cf75d7: Pull complete 
7fac07fb303e: Pull complete 
a9b2cca3f218: Pull complete 
b3af545b8284: Pull complete 
d1dfec3e935f: Pull complete 
e8ef04736ed5: Pull complete 
bf66f7c97847: Pull complete 
Digest: sha256:763f25d549f9af009c0dfb1cfdb970f028dd90b1d94b71d39cd616ce82a73ca5
Status: Downloaded newer image for marcelstoer/nodemcu-build:latest
fatal: Not a git repository (or any parent up to mount point /opt/nodemcu-firmware)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).

Ok..

cd ~
git init
cd /
sudo git init

Ok, one more time

cd ~
sudo docker run --rm -ti -v `pwd`:/opt/nodemcu-firmware marcelstoer/nodemcu-build

fatal: ambiguous argument 'HEAD': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'

how to fix it and build? Thanks.

[marcelstoer]

https://github.com/marcelstoer/docker-nodemcu-build#run-this-image-with-docker

...and change to the NodeMCU firmware directory (in the Docker console). Then run...

cd ~/nodemcu-firmware
docker...

[rvalle]

@marcelstoer I am having the same problem it is not that I did not enter the firmware directory after the git clone, but rather:

[rafael@asusraf nodemcu-firmware]$ docker run --rm -ti -v $(pwd):/opt/nodemcu-firmware marcelstoer/nodemcu-build bash
root@f2e68fbc3563:/opt/nodemcu-firmware# ls -l
ls: cannot open directory '.': Permission denied

[rvalle]

One would ask how is it that an image running as root cannot access any directory? That rings the bell as SELINUX or similar

[rvalle]

yes.

sudo setenforce 0

I use fedora 31 that has SELINUX enabled, apparently.