More fixes
- fixed docker builds
- fixed mentions regex test
- fixed DATABASE_URL stuff
- change schema path in diesel.toml
Address review comments
- add jsonb column back into activity table
- remove authors field from cargo.toml
- adjust LEMMY_DATABASE_URL env var usage
- rename all occurences of LEMMY_DATABASE_URL to DATABASE_URL
Decouple utils and db
Split code into cargo workspaces
Co-authored-by: Felix Ableitner <me@nutomic.com>
Reviewed-on: https://yerbamate.dev/LemmyNet/lemmy/pulls/67
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