Add MOU generation/upload settings to Docker environment

[matthew-li]

Make it possible to enable MOU functionality in the Docker environment.

• It might be easiest to keep it disabled by default in both BRC and LRC.
• The developer can use overrides.conf (#582) to enable it.
• The storage backend could be the local file one. This might need to be a bind mount--unclear how this would be mounted conditionally. It might be cleaner/better to have the developer use the Google Drive backend with their personal account.
• Include instructions on how to set it up.
  • The MOU instructions that have been added to README.md should be broken out into a separate document, and then linked to from the Docker instructions.

[matthew-li]

@Hzaakk

I've moved the MOU sections of README.md into the docs repo.

I've merged develop into the branch clean_up_dev_env_mou--you can work off of that.