Docker Documentation
====================

This directory contains the Docker user manual in the Markdown format.
Do *not* edit the man pages in the man1 directory. Instead, amend the
Markdown (*.md) files.

# Generating man pages from the Markdown files

The recommended approach for generating the man pages is via a Docker
container using the supplied `Dockerfile` to create an image with the correct
environment. This uses `go-md2man`, a pure Go Markdown to man page generator.

## Building the md2man image

There is a `Dockerfile` provided in the `docker/docs/man` directory.

Using this `Dockerfile`, create a Docker image tagged `docker/md2man`:

    docker build -t docker/md2man .

## Utilizing the image

Once the image is built, run a container using the image with *volumes*:

    docker run -v /<path-to-git-dir>/docker/docs/man:/docs:rw \
    -w /docs -i docker/md2man /docs/md2man-all.sh

The `md2man` Docker container will process the Markdown files and generate
the man pages inside the `docker/docs/man/man1` directory using
Docker volumes. For more information on Docker volumes see the man page for
`docker run` and also look at the article [Sharing Directories via Volumes]
(https://docs.docker.com/use/working_with_volumes/).