* Combine prod and dev docker setups using build-arg
- Fixes#2603
* Dont use cache for release build.
* Separate comment distinguish into its own action.
- Fixes#2708
---------
Co-authored-by: Nutomic <me@nutomic.com>
* Merge websocket crate into api_common
* Add SendActivity trait so that api crates compile in parallel with lemmy_apub
* Rework websocket code
* fix websocket heartbeat