Merge commit '5694e24bbf9afccbbf1b44d3a405a4e2bc0ff08d' into glitch-soc/merge-upstream

Conflicts:
- `.github/workflows/build-nightly.yml`:
  Upstream changed the environment variables used for defining the version
  number. This change occurs close to lines that were modified in glitch-soc
  to account for the different repositories to push to.
  Ported upstream changes.
- `.github/workflows/build-push-pr.yml`:
  Upstream changed the environment variables used for defining the version
  number. This change occurs close to lines that were modified in glitch-soc
  to account for the different repositories to push to.
  Ported upstream changes.
- `lib/mastodon/version.rb`:
  Upstream changed how the version string is built from environment variables.
  Adapted the logic to account for the `+glitch` in glitch-soc.

.github/workflows/build-nightly.yml

@@ -16,9 +16,9 @@ jobs:
         env:
           TZ: Etc/UTC
         run: |
-          echo mastodon_version_suffix=nightly.$(date +'%Y-%m-%d')>> $GITHUB_OUTPUT
+          echo mastodon_version_prerelease=nightly.$(date +'%Y-%m-%d')>> $GITHUB_OUTPUT
     outputs:
-      suffix: ${{ steps.version_vars.outputs.mastodon_version_suffix }}
+      prerelease: ${{ steps.version_vars.outputs.mastodon_version_prerelease }}
 
   build-image:
     needs: compute-suffix
@@ -28,8 +28,7 @@ jobs:
       use_native_arm64_builder: false
       push_to_images: |
         ghcr.io/${{ github.repository_owner }}/mastodon
-      # The `-` is important here, result will be v4.1.2-nightly.2022-03-05
-      version_suffix: -${{ needs.compute-suffix.outputs.suffix }}
+      version_prerelease: ${{ needs.compute-suffix.outputs.prerelease }}
       labels: |
         org.opencontainers.image.description=Nightly build image used for testing purposes
       flavor: |
@@ -37,5 +36,5 @@ jobs:
       tags: |
         type=raw,value=edge
         type=raw,value=nightly
-        type=schedule,pattern=${{ needs.compute-suffix.outputs.suffix }}
+        type=schedule,pattern=${{ needs.compute-suffix.outputs.prerelease }}
     secrets: inherit