Run worker process

[rasodu]

• Story points:
• Priority: high
• Description: As a developer I want a way to run worker process on Heroku so that I can run my background tasks.

[rasodu]

Help

• Docker docs
• Heroku run section

Add support for worker process

• Same image but run different command. With this process we will bloated docker image but build process is very simple.

Steps

• [x] Add command line project
• [x] Command line project should exit on sigint
• [x] Add run section to the heroku.yaml