* CD - Add GitHub Action to push Docker image to Docker Hub
* BUILD - Reduce size of image by using slim version of Debian
* CI - Modify Push Docker Image action to build and push Docker image to linux/amd64 and linux/arm64 architectures
- PR builds will now run even if they weren't opened as drafts
- PR builds will now re-run when they get new commits
- Builds can now be manually triggered from GitHub
We were technically already using 22.04 for a bit, it got updated without us noticing since the version was set to `ubuntu-latest`.
Affix the version to 22.04 so that it doesn't get unexpectedly updated again, and update the artifact's zip to reflect the change.
* Download and list artifacts after build
* Add commit hash + file extension to artifact name
* Initial SSH implementation
* Don't build artifacts for PRs
* Fetch endpoint from secret
* Zip artifacts before uploading to CDN
* Use short SHA in archive names
