Issues for docker in local mode

[TheseusGrey]

## Description
There are a couple of issues surrounding docker in local mode:

• Games are deleted as per Delete pods based on status #1021, however when using docker the workers are not deleted with the game.
• The GAME_API_URL is not pointing towards the django server, but the docker internal DNS url. So when closing stopped games the request is not sent to the Django server as it should be, and games must be closed manually by going to http://localhost:8000/aimmo/api/games/<ID>/stop/ in order to update the game status.

[faucomte97]

@dent50cent is this still an issue?

[dionizh]

Fixed by #1525.