template

.forgejo/workflows/build-on-commit.yml

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+name: Build and Publish Docker Image on Commit
+
+on:
+  push:
+    branches:
+      - main
+    tags: 
+      - '!' # Exclude tags
+
+jobs:
+  build-and-publish:
+    runs-on: docker-builder
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Test Docker Hello World
+        run: |
+          echo "Testing Docker connection..."
+          docker run hello-world
+
+      - name: Login to OCI registry
+        run: |
+          echo "${{ secrets.OCI_TOKEN }}" | docker login git.merith.xyz -u "${{ secrets.OCI_USER }}" --password-stdin
+
+      - name: Build and push Docker image
+        run: |
+          REPO=git.merith.xyz/${{ github.repository }}
+          # Build and push multi-platform Docker images
+          docker build -t $REPO:${{ github.sha }} --push .

.forgejo/workflows/build-on-tag.yml

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+name: Build and Publish Docker Image on Tag
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  build-and-publish:
+    runs-on: docker-builder
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Test Docker Hello World
+        run: |
+          echo "Testing Docker connection..."
+          docker run hello-world
+
+      - name: Login to OCI registry
+        run: |
+          echo "${{ secrets.OCI_TOKEN }}" | docker login git.merith.xyz -u "${{ secrets.OCI_USER }}" --password-stdin
+
+      - name: Build and push Docker image
+        run: |
+          REPO=git.merith.xyz/${{ github.repository }}
+          TAG=${{ github.ref_name }} # Get the tag name from the context
+          # Build and push multi-platform Docker images
+          docker build -t $REPO:$TAG --push .
+          # Tag and push latest
+          docker tag $REPO:$TAG $REPO:latest
+          docker push $REPO:latest

Dockerfile

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+FROM alpine:3.12