Create publish_public_image

.github/workflows/publish_public_image

@@ -0,0 +1,32 @@
+name: Publish Docker Images
+on:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  build-and-publish:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push image (multi-arch) - microdata-metadata-service
+        run: |
+          docker buildx build --platform linux/amd64,linux/arm64 \
+            -t ghcr.io/statisticsnorway/microdata-metadata-service:latest \
+            -t ghcr.io/statisticsnorway/microdata-metadata-service:${{ github.sha }} \
+            . --push