View source for Containerfile

Containerfile and Dockerfile are interchangeable for the most part.

OCI prefers the generic term Containerfile.

== WORKDIR ==
This set the working directory, it will also create the directory if it doesn't exists.
  WORKDIR /opt

== COPY ==
This will copy a file from the local host to the container.
  COPY app.tar /app

* user ADD if you want to have more options, like auto extract and git pulls.

== ENV ==
To set an environment variable.
  ENV EXAMPLE=/opt/example
  ENV APP_PROFILE=dev