Official Docker installation instructions for Ubuntu 20.04 LTS

Official Docker Compose installation instructions for Ubuntu 20.04 LTS

$ docker run <IMAGENAME>

$ docker ps

$ docker images

$ docker run -d <IMAGENAME> or $ docker run --detatched=true <IMAGENAME>

if you want to, for example, be able to access a web server running within the Docker container from an outside browser, you can do this to make it available

$ docker run -P <IMAGENAME>