Docker and Git Workshop

One Day workshop on understanding Docker and Git

Prerequisite

Machine/VM with linux, python3 (3.xx) and pip3 installed

Linux machine with following packages installed

1. Install Ubuntu 22.04 LTS from here
2. Install Git from your terminal by running following commands

   •  sudo apt-get update

   •  sudo apt-get install git

3. Verify the installation was successful by typing

   •  git --version

GitHub account

1. If you don't have the account on github then create an account on GitHub
2. Configure SSH key by following the below steps
   • Generating a new SSH key
   • Adding your SSH key to the ssh-agent
   • To list all contents of ssh folder

      ls -al ~/.ssh

   • To instal xclip

      sudo apt install xclip

   • Copy ssh key

      xclip -sel clip < ~/.ssh/id_ed25519.pub

   • Adding a new SSH key to your Github account
3. Create a new work directory named WORKSHOP inside the /home directory, by running following command in the terminal.

   •  mkdir WORKSHOP

4. Fork the current repository.
5. Clone your forked repository inside the WORKSHOP directory.

Info: You can refer this guide to understand how to fork and clone

Docker instalation

1. To install docker follow the below mentioned steps.

   1. Set up the repository
   2. Install Docker Engine

2. Configure docker to run without sudo.

   1. Manage Docker as a non-root user

3. Install Docker-compose by running the follwing command:

   • The following command will download the 2.16.0 release and save the executable file at /usr/local/bin/docker-compose, which will make this software globally accessible as docker-compose:

      sudo curl -SL https://github.com/docker/compose/releases/download/v2.16.0/docker-compose-linux-x86_64 -o /usr/local/bin/docker-compose

   • Set the correct permissions so that the docker-compose command is executable:

      sudo chmod +x /usr/local/bin/docker-compose

   • To verify that the installation was successful, you can run:

      docker-compose --version

     You’ll see output similar to this:

      Output
      docker-compose version 2.16.0, build 5becea4c

     Docker Compose is now successfully installed on your system.

4. Download the follwing docker images to your local machine

   •  docker pull postgres:14-alpine

     • Verify the image

       docker run --rm -ti postgres:14-alpine  psql -V

       Output: psql (PostgreSQL) 14.5

VS Code setup

• Install VS Code
• Install Docker extension on your VS Code

Docker

• By the end of this workshop you will understand following things
• You will be Introduced to the concept of containerisation and why its required.
• You will learn how to Build and run your own Containers.
• You will learn how to Run Multiple Services with Docker Compose
• You will learn how to Expose Ports, Volume Mounts, Utilizing Networks, Limiting Resources (the 4 features we use regularly.)

  GIT

• You will be Introduced to GIT
• You will learn git commands (push, pull make Pull request etc)

  Schedule

  Time	Topics
  09:00 - 09:30	[Introduction]
  09:30 - 10:00	Introduction to GIT
  10:00 - 11:00	Git Commands (push, pull, make Pull request etc)
  11:00 - 11:30	What is docker
  11:30 - 12:00	Docker Commands
  12:00 - 01:30	[Break]
  01:30 - 4:00	Building Custom Containers
  	Run Multiple Services with Docker Compose
  4:00 - 5:00	Expose Ports, Volume Mounts, Utilizing Networks, Limiting Resources
  5:15 - 5:30	[Wrapping Up]