feat: Automatic image build & push

Author: SFSeeger

.github/workflows/build-container.yml

@@ -0,0 +1,42 @@
+name: build-container.yml
+on:
+  push:
+    tags:
+      - '*.*.*'
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Extract tag name
+        id: meta
+        run: |
+          TAG=${GITHUB_REF#refs/tags/}
+          echo "tag=$TAG" >> $GITHUB_OUTPUT
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Set image name
+        id: image
+        run: |
+          IMAGE=ghcr.io/${{ github.repository }}
+          echo "image=$IMAGE" >> $GITHUB_OUTPUT
+
+      - name: Build and push
+        uses: docker/build-push-action@v7
+        with:
+          push: true
+          tags: ${{ steps.image.outputs.image }}:latest, ${{ steps.image.outputs.image }}:${{ steps.meta.outputs.tag }}