Added skip sync on no branch

Added:

1. Flag to skip sync when no branch is available. This is for the case of tags for example.

Added exit on no permissions

Fixes:

1. Script will exit immediately if permissions are invalid.

Added docker image with dockerhub

1.2.4

added docker username and pass ecrets

Moved to generated scripts and install

1.2.0

Updated readme

Simple cleanups

1. Added some readme

First release

Core functionality, this is the first release of a working script.