Replace existing worflow with publish-on-tag

.github/workflows/ci.yml

@@ -1,65 +0,0 @@
-name: Docker CI
-on:
-  push:
-    branches:
-      - master
-env:
-  LATEST_TAG: 24.0.1
-jobs:
-  build:
-    name: Build and push to Docker Hub
-    runs-on: ubuntu-22.04
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "24.0.1"
-          - "23.1"
-          - "23.0"
-          - "22.1"
-          - "22.0"
-          - "0.21.2"
-          - "0.21.1"
-          - "0.21.0"
-          - "0.20.2"
-          - "0.20.1"
-          - "0.20.0"
-          - "0.19.1"
-          - "0.19.0.1"
-          - "0.18.1"
-          - "0.18.0"
-          - "0.17.2"
-          - "0.17.1"
-          - "0.17.0.1"
-          - "0.17.0"
-          - "0.16.3"
-          - "0.15.2"
-          - "0.14.3"
-          - "0.13.2"
-          - "0.13.1"
-          - "0.13.0"
-    steps:
-      - uses: actions/checkout@v1
-  
-      - name: Login to Docker Hub
-        run: echo "${{ secrets.DOCKER_TOKEN }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
-
-      - name: Setup Docker buildx
-        run: docker buildx create --use
-
-      - name: Run Docker buildx
-        run: |
-          docker buildx build \
-            --platform linux/amd64,linux/arm64,linux/arm/v7 \
-            --build-arg VERSION=${{matrix.version}} \
-            --tag ${{ secrets.DOCKER_USERNAME }}/bitcoind:v${{matrix.version}} \
-            --push .
-
-      - name: Rebuild for latest tag
-        if: matrix.version == env.LATEST_TAG
-        run: |
-          docker buildx build \
-            --platform linux/amd64,linux/arm64,linux/arm/v7 \
-            --build-arg VERSION=${{matrix.version}} \
-            --tag ${{ secrets.DOCKER_USERNAME }}/bitcoind:latest \
-            --push .

.github/workflows/publish-on-tag.yml

@@ -0,0 +1,42 @@
+name: Publish Docker image on tag
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  push_to_dockerhub:
+    name: Push Docker image to Docker Hub
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Extract metadata
+        id: meta
+        run: |
+          echo "TAG=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
+          echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
+
+      - 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: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: getumbrel/bitcoind:${{ steps.meta.outputs.TAG }}
+          build-args: |
+            VERSION=${{ steps.meta.outputs.VERSION }}