README.md

Installing Requirements

Objective

• Build a container image that runs the main.py script by default when launched.
• Install the requirements when building the container.
• Run the container and verify it works.

Pointers

• 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"]

• Use a python image as the base.
• Use the RUN command to execute commands in the container when building it.

Up next

24 - Building with Docker Compose