Installing Docker

For Debian-based Linux systems

1. Install Dependency packages

   sudo apt-get update
   sudo apt-get -y install apt-transport-https ca-certificates curl software-properties-common
   

2. Add Docker's official GPG key:

   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
   

   
   

3. Add the Docker repository

   sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(. /etc/os-release; echo "$UBUNTU_CODENAME") stable"
   cat /etc/apt/sources.list.d/additional-repositories.list
   -should show "deb [arch=amd64] https://download.docker.com/linux/ubuntu xenial stable"
   

4. Install Docker Engine and Docker Compose

   sudo apt-get update
   sudo apt-get -y install docker-ce docker-compose
   

5. Add a user to the group to run docker commands as a nonprivileged user.

   sudo usermod -aG docker $USER
   

6. Log out and log back in so that the group membership is re-evaluated.