Bloclink improvements
Created by: john525
Changed bloclink dockerfile a little bit to make PNA dev and PRs work easier
Switched from using bloclink local dockerfile in the development repository to the bloclink local dockerfile in the bloclink repository (to make code organization more similar to other microservices)
Put the command in the docker-compose file instead of the dockerfile, so you can easily change it during development
Added github token to docker-compose and inject it into the container at runtime, so docker can pip install any BlocPower library it needs