Installing docker

This works for Ubuntu 20.04

 1sudo apt update
 2curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
 3echo \
 4  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
 5  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
 6
 7sudo apt-get update #should show docker repo
 8sudo apt-get install docker-ce docker-ce-cli containerd.io
 9
10sudo docker run hello-world #should show everything working properly
11# install docker-compose
12sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
13
14sudo chmod +x /usr/local/bin/docker-compose
15sudo docker-compose -v
16sudo adduser sagar docker # so I don't have to sudo every time when using docker

References:

  1. https://docs.docker.com/engine/install/ubuntu/
  2. https://docs.docker.com/compose/install/