Add Docker build workflow for image release

.github/workflows/docker_build.yml

@@ -0,0 +1,90 @@
+name: Docker Build Release
+
+on:
+  push:
+    branches:
+      - lightlink # Trigger the workflow on pushes to the main branch
+    tags:
+      - "**" # Trigger the workflow on tags including hierarchical tags like v1.0/beta
+  pull_request:
+    types: [opened, synchronize] # Trigger the workflow when a PR is opened or updated
+
+jobs:
+  extract-version:
+    name: Extract version
+    runs-on: ubuntu-latest
+    outputs:
+      VERSION: ${{ steps.extract_version.outputs.VERSION }}
+    steps:
+      - name: Extract version
+        id: extract_version
+        run: |
+          if [[ "${GITHUB_REF_TYPE}" == "tag" ]]; then
+            VERSION="${GITHUB_REF#refs/tags/}"
+          else
+            VERSION="$(echo ${GITHUB_SHA} | cut -c1-7)"
+          fi
+          echo "VERSION=${VERSION}" >> $GITHUB_OUTPUT
+
+          echo "|                     |                        |" >> $GITHUB_STEP_SUMMARY
+          echo "| ------------------- | ---------------------- |" >> $GITHUB_STEP_SUMMARY
+          echo "| \`GITHUB_REF_TYPE\` | \`${GITHUB_REF_TYPE}\` |" >> $GITHUB_STEP_SUMMARY
+          echo "| \`GITHUB_REF_NAME\` | \`${GITHUB_REF_NAME}\` |" >> $GITHUB_STEP_SUMMARY
+          echo "| \`GITHUB_REF\`      | \`${GITHUB_REF}\`      |" >> $GITHUB_STEP_SUMMARY
+          echo "| \`GITHUB_SHA\`      | \`${GITHUB_SHA}\`      |" >> $GITHUB_STEP_SUMMARY
+          echo "| \`VERSION\`         | \`${VERSION}\`         |" >> $GITHUB_STEP_SUMMARY
+
+  build-docker:
+    name: Build and publish Docker image
+    needs: extract-version
+    runs-on: ${{ matrix.configs.runner }}
+    env:
+      VERSION: ${{ needs.extract-version.outputs.VERSION }}
+    permissions:
+      contents: read
+      packages: write
+    strategy:
+      matrix:
+        configs:
+          - target: linux/amd64
+            runner: ubuntu-latest
+    steps:
+      - name: checkout sources
+        uses: actions/checkout@v4
+
+      - name: docker qemu
+        uses: docker/setup-qemu-action@v3
+
+      - name: docker buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: docker metadata
+        uses: docker/metadata-action@v5
+        id: meta
+        with:
+          images: ghcr.io/${{ github.repository }}
+          labels: org.opencontainers.image.source=${{ github.repositoryUrl }}
+          tags: |
+            type=sha
+            type=schedule,pattern=nightly
+
+      - name: docker login
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: docker build and push op-rbuilder
+        uses: docker/build-push-action@v5
+        with:
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          file: Dockerfile
+          context: .
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: ${{ matrix.configs.target }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          build-args: |
+            RBUILDER_BIN=op-rbuilder