— Tom Clark 2022/02/12 09:25

If you are new to Docker technology, here is a guide that I found very helpful:

Docker Tutorial for Beginners [FULL COURSE in 3 Hours]
by TechWorld with Nana via Youtube

What does a Docker structure look like?

• Layers of images
  • Base image is usually a tiny Gnu/Linux footprint;
  • Intermediate images are libraries/services like a database, etc.;
  • The application image is the top layer).
• Mostly Linux Base Images, like Alpine, because they are so small in size

Why Docker vs a Virtual Machine?

• Docker is less resource hungry because Docker containers use the host Linux kernel.

Where are docker containers stored?

• I think the big public repository is hub.docker.com.

How to install Docker?

• This can change, so get the latest information by doing an Internet search “Install Docker” and go to the official docker documentation. At this time, it's located at docs.docker.com.
• As of 12 Feb 2022, Linux Mint 20.3 is based on Ubuntu 20.04 “Focal”. Try [cat /etc/upstream-release/lsb-release] in the terminal or visit https://en.wikipedia.org/wiki/Linux_Mint#Ubuntu-based_editions to verify your upstream distribution. Be careful if you are using Linux Mint LMDE, which is downstream of Debian, not Ubuntu.

docker ps #Displays images that are running
docker run [image] #Starts container based on image (pulls image from hub if not already downloaded to your machine