Initial commit

.github/dependabot.yml

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+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "docker"
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"

.github/workflows/on-push-main.yml

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+name: On push to main
+
+on:
+  push:
+    branches:
+      - main
+
+env:
+  PLATFORMS: "linux/amd64,linux/arm64,linux/arm/v7"
+
+jobs:
+  build_and_push:
+    name: Build and push Docker image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Extract tag string
+        id: git
+        shell: bash
+        run: |
+          RELEASE_VERSION="dev-$(date +%s)"
+          echo "image_tag=${RELEASE_VERSION}" >> ${GITHUB_OUTPUT}
+      
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Install buildx
+        uses: docker/[email protected]
+
+      - name: Login to docker hub
+        uses: docker/[email protected]
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      - name: Login to GitHub Container Registry
+        uses: docker/[email protected]
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ github.token }}
+
+      - name: Build and push ${{ github.repository }}:${{ steps.git.outputs.image_tag }}
+        uses: docker/[email protected]
+        with:
+          platforms: ${{ env.PLATFORMS }}
+          push: true
+          tags: |
+            ${{ github.repository }}:${{ steps.git.outputs.image_tag }}
+            ${{ github.repository }}:development
+            ghcr.io/${{ github.repository }}:${{ steps.git.outputs.image_tag }}
+            ghcr.io/${{ github.repository }}:development

.github/workflows/on-release.yml

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+name: On release
+
+on:
+  release:
+    types: # This configuration does not affect the page_build event above
+      - created
+
+env:
+  PLATFORMS: "linux/amd64,linux/arm64,linux/arm/v7"
+
+jobs:
+  build_and_push:
+    name: Build and push Docker image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Extract tag string
+        id: git
+        shell: bash
+        run: |
+          RELEASE_VERSION=${GITHUB_REF#refs/*/}
+          echo "image_tag=${RELEASE_VERSION}" >> ${GITHUB_OUTPUT}
+      
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Install buildx
+        uses: docker/[email protected]
+
+      - name: Login to docker hub
+        uses: docker/[email protected]
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      - name: Login to GitHub Container Registry
+        uses: docker/[email protected]
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ github.token }}
+
+      - name: Build and push ${{ github.repository }}:${{ steps.git.outputs.image_tag }}
+        uses: docker/[email protected]
+        with:
+          platforms: ${{ env.PLATFORMS }}
+          push: true
+          tags: |
+            ${{ github.repository }}:${{ steps.git.outputs.image_tag }}
+            ${{ github.repository }}:latest
+            ghcr.io/${{ github.repository }}:${{ steps.git.outputs.image_tag }}
+            ghcr.io/${{ github.repository }}:latest
+
+      - name: Update dockerhub description
+        uses: peter-evans/dockerhub-description@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+          repository: ${{ github.repository }}
+          short-description: ${{ github.event.repository.description }}

Dockerfile

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+FROM alpinelinux/docker-cli:latest
+
+LABEL org.opencontainers.image.title=gantry
+LABEL org.opencontainers.image.description="Updating docker swarm services"
+LABEL org.opencontainers.image.vendor="Shizun Ge"
+LABEL org.opencontainers.image.licenses=GPLv3
+
+RUN mkdir -p /gantry
+
+WORKDIR /gantry
+
+RUN apk add --update --no-cache curl tzdata
+
+COPY src/* /gantry
+
+ENTRYPOINT ["/gantry/entrypoint.sh"]