Web api for dynamically adding checks

..and dockerfile that is a bit more efficient at rebuilding python changes

This is still a WIP but I would like to get a bit of feedback
Is there a way to ltrim off entries to cap this collection? lpush/ltrim can work in constant time to emulate what you get with mongo for a "capped collection" - but I can't for the life of me work out how it may work with ltrim/rpush. Must be a way.