Simplify setting up dev environment

[talavis]

Should be combined with #337 in dds_cli

Add Mailcatcher and Minio to the development environment. This should enable a full zero-conf dev environment.

• Mailcatcher catches emails and will make them available at localhost:1080
• Minio is used as a local S3 storage, meaning that Safespring won't be needed
• config.py has been updated with new defaults, matching the needs of the above services
• Profiles have been added in docker-compose.yml
• Readme is updated with a note about the new setup

• docker-compose up will start database and backend
• docker-compose --profile dev up will start database, backend, and mailcatcher
• docker-compose --profile cli up will start database, backend, cli, minio, and mailcatcher
• docker-compose --profile full-dev up will start database, backend, minio, mailcatcher, cli, and redis

docker-compose --profile cli up can be used to have a full local environment for development of both web and cli by starting a shell in dds_cli.

Running the "run tests" command

docker-compose -f docker-compose.yml -f tests/docker-compose-test.yml up --build --exit-code-from backend

will only start the testing backend and database.

• Tests passing
• [-] Black formatting
• [-] Migrations for any changes to the database schema
• Rebase/merge the dev branch
• Note in the CHANGELOG

[codecov]

Codecov Report

Merging #993 (1afb481) into dev (5282046) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##              dev     #993   +/-   ##
=======================================
  Coverage   87.81%   87.81%           
=======================================
  Files          26       26           
  Lines        2905     2905           
=======================================
  Hits         2551     2551           
  Misses        354      354           

Impacted Files	Coverage Δ
dds_web/config.py	100.00% <100.00%> (ø)

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[i-oden]

Awesome!! Thanks for this 👏🏻 🎉

[alneberg]

Amazing! Once I learnt how to use the docker-compose --profile it worked very smoothly!