Add Container Image release workflow

.github/workflows/container-release.yml

@@ -0,0 +1,44 @@
+name: Container release
+
+on:
+  push:
+    branches:
+      - master
+  schedule:
+    - cron: '5 5 * * 0'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    strategy:
+      fail-fast: false
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Containerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile → Containerfile

@@ -15,7 +15,9 @@ ARG REPO=theforeman/obal.git
 RUN dnf config-manager --add-repo https://downloads.kitenet.net/git-annex/linux/current/rpms/git-annex.repo && \
     pip3 install --upgrade pip && \
     pip3 install git+https://github.com/${REPO}@${VERSION} && \
-    obal setup
+    obal setup && \
+    dnf clean all
+
 
 RUN mkdir -p /opt/packaging
 WORKDIR /opt/packaging