users can only specify the folder and the
dockerfile must be names "Dockerfile" this allows
users to specify the file and it can be called
"Dockerfile" or <some name>.Dockerfile
- Move each trigger handler into its own file
- Add dictionary helper classes for easier reading and writing of dict-based data
- Extract the web hook payload -> internal representation building for each trigger system
- Add tests for this transformation
- Remove support for Github archived-based building
