Use native runners for CI (#342)

* feat: use platform-specific runners

* feat: replace with template

* fix: image name

* fix: registry image name

* fix: checkout repo

* fix: add drop version

* fix: add sha env

* fix: permissions

Author: DecDuck

.github/workflows/release.yml

@@ -8,11 +8,20 @@ on:
   schedule:
     - cron: "0 2 * * *" # run at 2 AM UTC
 
+env:
+  REGISTRY_IMAGE: ghcr.io/drop-oss/drop
+
 jobs:
-  web:
-    name: Build Docker image
-    # self-hosted runner to speed things up
-    runs-on: [self-hosted, linux]
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - platform: linux/amd64
+            runner: ubuntu-latest
+          - platform: linux/arm64
+            runner: ubuntu-24.04-arm
+    runs-on: ${{ matrix.runner }}
     permissions:
       packages: write
       contents: read
@@ -26,6 +35,30 @@ jobs:
           ref: ${{ github.ref }}
           token: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Prepare
+        run: |
+          platform=${{ matrix.platform }}
+          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY_IMAGE }}
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Determine final version
         id: get_final_ver
         run: |
@@ -44,22 +77,58 @@ jobs:
           echo "Drop's release tag will be: $FINAL_VER"
           echo "final_ver=$FINAL_VER" >> $GITHUB_OUTPUT
 
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
+      - name: Build and push by digest
+        id: build
+        uses: docker/build-push-action@v6
+        with:
+          platforms: ${{ matrix.platform }}
+          labels: ${{ steps.meta.outputs.labels }}
+          tags: ${{ env.REGISTRY_IMAGE }}
+          outputs: type=image,push-by-digest=true,name-canonical=true,push=true
+          provenance: mode=max
+          sbom: true
+          build-args: |
+            BUILD_DROP_VERSION=${{ steps.get_final_ver.outputs.final_ver }}
+            BUILD_GIT_REF=${{ github.sha }}
 
-      - name: Set up Docker Buildx
-        id: buildx
-        uses: docker/setup-buildx-action@v3
+      - name: Export digest
+        run: |
+          mkdir -p ${{ runner.temp }}/digests
+          digest="${{ steps.build.outputs.digest }}"
+          touch "${{ runner.temp }}/digests/${digest#sha256:}"
+
+      - name: Upload digest
+        uses: actions/upload-artifact@v4
         with:
-          buildkitd-flags: --debug
+          name: digests-${{ env.PLATFORM_PAIR }}
+          path: ${{ runner.temp }}/digests/*
+          if-no-files-found: error
+          retention-days: 1
 
-      - name: Log in to the Container registry
+  merge:
+    runs-on: ubuntu-latest
+    needs:
+      - build
+    permissions:
+      packages: write
+      contents: read
+    steps:
+      - name: Download digests
+        uses: actions/download-artifact@v4
+        with:
+          path: ${{ runner.temp }}/digests
+          pattern: digests-*
+          merge-multiple: true
+
+      - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
       - name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@v5
@@ -78,33 +147,12 @@ jobs:
             # set latest tag for stable releases
             type=raw,value=latest,enable=${{ github.event_name == 'release' && github.event.release.prerelease == false }}
 
-      - name: Cache
-        uses: actions/cache@v4
-        id: cache
-        with:
-          path: cache-mount
-          key: cache-mount-${{ hashFiles('Dockerfile') }}
-
-      - name: Restore Docker cache mounts
-        uses: reproducible-containers/buildkit-cache-dance@v3
-        with:
-          builder: ${{ steps.setup-buildx.outputs.name }}
-          cache-dir: cache-mount
-          dockerfile: Dockerfile
-          skip-extraction: ${{ steps.cache.outputs.cache-hit }}
+      - name: Create manifest list and push
+        working-directory: ${{ runner.temp }}/digests
+        run: |
+          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
+            $(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *)
 
-      - name: Build and push image
-        id: build-and-push
-        uses: docker/build-push-action@v6
-        with:
-          context: .
-          push: true
-          provenance: mode=max
-          sbom: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          platforms: linux/amd64,linux/arm64
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
-          build-args: |
-            BUILD_DROP_VERSION=${{ steps.get_final_ver.outputs.final_ver }}
+      - name: Inspect image
+        run: |
+          docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:${{ steps.meta.outputs.version }}