Martyn Welch authored Mar 04, 2021 and Martyn Welch committed May 10, 2021

We have been using an old version of hugo in the gitlab registry as the
latest version available at the time this was setup had a show stopping
bug. Update the version of hugo used and switch to the docker image
recommended by the Hugo project as this is potentially easier for those
behind restrictive proxies to access.

Provide a helper script to also make it easier to run Hugo from docker as
a developer and document it. Use the `--rm` option to cause docker to
remove the container once it's exited to avoid them building up and add
`--security-opt label=disable` for those using an SELinux enabled
distribution.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>