Container build process

[pcolmer]

Add scripts and other configuration files to allow 96Boards website to be built using the new Dockerised mechanism.

Also fix various links that are now showing up as broken because the build process is more robust :)

[kylekirkby]

Hi @pcolmer,

Thank you so much for the work on getting 96Boards.org building with the Docker container approach. There are a bunch of redirects removed - are we adding replacements to the routingrules.json file? Other than the redirect comments LGTM :)

BR,

Kyle

[pcolmer]

@kylekirkby

There are a bunch of redirects removed - are we adding replacements to the routingrules.json file?

No. The redirects were removed because you cannot have the same "source" URL mentioned more than once in a Jekyll site otherwise you end up with the redirect page being created multiple times (once for each destination) and you don't know which destination you'll end up with.

That and the fact that we're now using Jekyll Doctor as a pre-build test phase and it refuses to allow a page to be built from multiple sources, which is what the above scenario does.