Rework the container image build actions (#26007)

.github/workflows/build-nightly.yml

@@ -3,58 +3,37 @@ on:
   workflow_dispatch:
   schedule:
     - cron: '0 2 * * *' # run at 2 AM UTC
+
 permissions:
   contents: read
   packages: write
 
 jobs:
-  build-nightly-image:
+  compute-suffix:
     runs-on: ubuntu-latest
-
-    concurrency:
-      group: ${{ github.workflow }}-${{ github.ref }}
-      cancel-in-progress: true
-
     steps:
-      - uses: actions/checkout@v3
-      - uses: hadolint/hadolint-action@v3.1.0
-      - uses: docker/setup-qemu-action@v2
-      - uses: docker/setup-buildx-action@v2
-
-      - name: Log in to the Github Container registry
-        uses: docker/login-action@v2
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - uses: docker/metadata-action@v4
-        id: meta
-        with:
-          images: |
-            ghcr.io/mastodon/mastodon
-          flavor: |
-            latest=auto
-          tags: |
-            type=raw,value=nightly
-            type=schedule,pattern=nightly-{{date 'YYYY-MM-DD' tz='Etc/UTC'}}
-          labels: |
-            org.opencontainers.image.description=Nightly build image used for testing purposes
-
-      - name: Generate version suffix
-        id: version_vars
+      - id: version_vars
         run: |
           echo mastodon_version_suffix=+nightly-$(date +'%Y%m%d') >> $GITHUB_OUTPUT
+    outputs:
+      suffix: ${{ steps.version_vars.outputs.mastodon_version_suffix }}
 
-      - 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 }}
-          push: ${{ github.repository == 'mastodon/mastodon' && github.event_name != 'pull_request' }}
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+  build-image:
+    needs: compute-suffix
+    uses: ./.github/workflows/build-container-image.yml
+    with:
+      platforms: linux/amd64,linux/arm64
+      use_native_arm64_builder: true
+      push_to_images: |
+        tootsuite/mastodon
+        ghcr.io/mastodon/mastodon
+      version_suffix: ${{ needs.compute-suffix.outputs.suffix }}
+      labels: |
+        org.opencontainers.image.description=Nightly build image used for testing purposes
+      flavor: |
+        latest=auto
+      tags: |
+        type=raw,value=edge
+        type=raw,value=nightly
+        type=schedule,pattern=nightly-{{date 'YYYY-MM-DD' tz='Etc/UTC'}}
+    secrets: inherit