Building a Python Script Container

Objective

Build a container image that runs the hello.py script by default when launched.
Also include the world.py script in the container and make it possible to be ran by changing the CMD.
Run the container and verify it works.

Documentation: https://docs.docker.com/engine/reference/builder/
docker build . will build the Dockerfile in the current directory
- The . indicates that the Dockerfile's build context is this directory, and can not access any parent directories.
- The -f NAME parameter can be used to define what file to build. By default, a file called Dockerfile is being looked for.
- Use -t NAME to tag the built image with a name. This way that name can be used to later on run the container image.

Short template Dockerfile:

FROM ubuntu

ENTRYPOINT ["/bin/echo", "Hello"]
CMD ["World"]