fix: use reusable workflow instead of composite action

Signed-off-by: Yukai Huang <yukaihuangtw@gmail.com>

.github/workflows/build-steps.yml

@@ -0,0 +1,74 @@
+name: Build Steps
+
+on:
+  workflow_call:
+    inputs:
+      platform:
+        required: true
+        type: string
+      registry_image:
+        required: true
+        type: string
+      runtime:
+        required: true
+        type: string
+      buildpack:
+        required: true
+        type: string
+
+jobs:
+  build:
+    steps:
+      -
+        name: Prepare Platform Environment
+        run: |
+          platform=${{ inputs.platform }}
+          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ inputs.registry_image }}
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      -
+        name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Build and push by digest
+        id: build
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./deployments/Dockerfile
+          platforms: ${{ inputs.platform }}
+          labels: ${{ steps.meta.outputs.labels }}
+          outputs: type=image,name=${{ inputs.registry_image }},push-by-digest=true,name-canonical=true,push=true
+          build-args: |
+            RUNTIME=${{ inputs.runtime }}
+            BUILDPACK=${{ inputs.buildpack }}
+      -
+        name: Export digest
+        run: |
+          mkdir -p /tmp/digests
+          digest="${{ steps.build.outputs.digest }}"
+          touch "/tmp/digests/${digest#sha256:}"
+      -
+        name: Upload digest
+        uses: actions/upload-artifact@v4
+        with:
+          name: digests-${{ env.PLATFORM_PAIR }}
+          path: /tmp/digests/*
+          if-no-files-found: error
+          retention-days: 1

.github/workflows/push-image.yml

@@ -27,7 +27,7 @@ jobs:
         run: echo "PLATFORM_PAIR=linux-amd64" >> $GITHUB_ENV
       -
         name: Execute Build Steps
-        uses: ./.github/actions/build-steps
+        uses: ./.github/workflows/build-steps.yml
         with:
           platform: linux/amd64
           registry_image: ${{ env.REGISTRY_IMAGE }}
@@ -44,7 +44,7 @@ jobs:
         run: echo "PLATFORM_PAIR=linux-arm64" >> $GITHUB_ENV
       -
         name: Execute Build Steps
-        uses: ./.github/actions/build-steps
+        uses: ./.github/workflows/build-steps.yml
         with:
           platform: linux/arm64
           registry_image: ${{ env.REGISTRY_IMAGE }}