Docker learning

 https://docs.docker.com/compose/gettingstarted/

https://docs.docker.com/get-started/02_our_app/

https://juliensalinas.com/en/dockerize-whole-linux-server/

https://phoenixnap.com/kb/docker-image-vs-container

https://phoenixnap.com/kb/create-docker-images-with-dockerfile

https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/Dockerfile-vs-docker-compose-Whats-the-difference#:~:text=The%20Dockerfile%20is%20used%20to,the%20docker%2Dcompose%20up%20command.