There are 2 ways to install Docker engine on Ubuntu, one is easy but the version not as updated. The other one is more complex but is the official way in docker.com

1. Easy Way (For older docker version)

Note the docker.io package name

sudo apt-get install docker.io

2. Hard Way (For latest docker version)

Follow this guide.

1. Uninstall old versions
   

   sudo apt-get remove docker docker-engine docker.io containerd runc

2. Setup apt-repository for docker
3. Install Docker engine
   

   sudo apt-get update
   sudo apt-get install docker-ce docker-ce-cli containerd.io

4. Verify that Docker engine is installed correctly
   

   sudo docker run hello-world

Bonus – Install docker-compose

Follow this docker-compose guide.

1. Download current stable release of Docker Compose
   

   sudo curl -L "https://github.com/docker/compose/releases/download/1.26.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

2. Apply executable permissions to the binary
   

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

3. Test installation
   

   docker-compose --version