Install and using Docker on Ubuntu 20.04
Prerequisites To follow this tutorial, you will need the following: One Ubuntu 20.04 server set up by following the Ubuntu 20.04 initial server setup guide , including a sudo non-root user and a firewall. An account on Docker Hub if you wish to create your own images and push them to Docker Hub, as shown in Steps 7 and 8. Step 1 — Installing Docker The Docker installation package available in the official Ubuntu repository may not be the latest version. To ensure we get the latest version, we’ll install Docker from the official Docker repository. To do that, we’ll add a new package source, add the GPG key from Docker to ensure the downloads are valid, and then install the package. First, update your existing list of packages: sudo apt update Next, install a few prerequisite packages which let apt use packages over HTTPS: sudo apt install apt-transport-https ca-certificates curl software-properties-common Then add the GPG key for the official Docker re...
