Docker install just links to datacats

[davidread]

Rather than supply 'official' ckan docker images and install instructions, we should simply link to datacats one as it works and is maintained.

There are serious issues with ckan's documented docker install (e.g. #2255) due to the images being long unmaintained.

The conclusion of the discussion:
#2255 (comment)
and subsequent discussion at the tech team meeting was to simply guide people towards the datacats docker install.

[davidread]

@gamesbook said:

@davidread Thanks! Unfortunately, the datacats approach does not work either.

They've had a great track record looking after user issues. However progress has slowed recently - we'll see how your issue fares - datacats/datacats#372

[gamesbook]

@davidread It could be support is "down" over the year end period. I think this might be a Docker issue as that project is moving pretty fast.

[kmbn]

We decided to close old issues that are not actively worked on so that we can focus our effort and attention on issues affecting the current versions of CKAN.

If this issue is still affecting the version of CKAN you're working with now, please feel free to comment or reopen the issue.

If you do reopen this issue, please update it with new details. One reason it might not have been resolved in the past is that it wasn't clear how a contributor could address the issue.