Add version suffixes to nightly & edge image builds (#24823)

.github/workflows/build-image.yml

@@ -57,9 +57,16 @@ jobs:
             type=pep440,pattern=v{{major}}.{{minor}}
             type=ref,event=pr
 
+      - name: Generate version suffix
+        id: version_vars
+        if: github.repository == 'mastodon/mastodon' && github.event_name == 'push' && github.ref_name == 'main'
+        run: |
+          echo mastodon_version_suffix=\"+edge-$(git rev-parse --short HEAD)\" >> $GITHUB_OUTPUT
+
       - uses: docker/build-push-action@v4
         with:
           context: .
+          build-args: MASTODON_VERSION_SUFFIX=${{ steps.version_vars.outputs.mastodon_version_suffix }}
           platforms: linux/amd64,linux/arm64
           provenance: false
           builder: ${{ steps.buildx.outputs.name }}

.github/workflows/build-nightly.yml

@@ -41,9 +41,15 @@ jobs:
           labels: |
             org.opencontainers.image.description=Nightly build image used for testing purposes
 
+      - name: Generate version suffix
+        id: version_vars
+        run: |
+          echo mastodon_version_suffix=\"+nightly-$(date +'%Y%m%d')\" >> $GITHUB_OUTPUT
+
       - uses: docker/build-push-action@v4
         with:
           context: .
+          build-args: MASTODON_VERSION_SUFFIX=${{ steps.version_vars.outputs.mastodon_version_suffix }}
           platforms: linux/amd64,linux/arm64
           provenance: false
           builder: ${{ steps.buildx.outputs.name }}