feat: add initial ubuntu image

.github/workflows/ubuntu.yml

@@ -0,0 +1,49 @@
+---
+name: Build Ubuntu Molecule image
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - ubuntu/**
+      - .github/workflows/ubuntu.yml
+#  schedule:
+#    - cron: ''
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        release: ['jammy']
+    steps:
+      - name: Generate build id (based on timestamp)
+        run: |
+          echo BUILD_ID=$(date +'%Y%m%d%H%M') >> $GITHUB_ENV
+
+      - name: Check-out repository
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU (for multi-arch build)
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Hub registry
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.REGISTRY_HUB_USERNAME }}
+          password: ${{ secrets.REGISTRY_HUB_PASSWORD }}
+
+      - name: Build and push image to Docker Hub registry
+        uses: docker/build-push-action@v5
+        with:
+          platforms: linux/amd64,linux/arm64
+          context: ./ubuntu
+          file: ./ubuntu/Dockerfile.${{ matrix.release }}
+          push: true
+          build-args: |
+            RELEASE=${{ matrix.release }}
+          tags: |
+            ${{ secrets.REGISTRY_HUB_USERNAME }}/molecule-ubuntu:${{ matrix.release }}
+            ${{ secrets.REGISTRY_HUB_USERNAME }}/molecule-ubuntu:${{ matrix.release }}-${{ env.BUILD_ID }}

README.md

@@ -6,4 +6,4 @@ Custom images for Ansible Molecule testing in GitHub Actions.
 
 | Name                      | Tags               | Architectures      |
 | :-------------------------| :------------------| :------------------|
-| [molecule-ubuntu](ubuntu/)| `22.04`           | `x86_64`,`aarch64`  |
+| [molecule-ubuntu](ubuntu/)| `jammy`            | `x86_64`,`aarch64` |

ubuntu/Dockerfile.jammy

@@ -0,0 +1,16 @@
+ARG RELEASE="jammy"
+
+FROM public.ecr.aws/ubuntu/ubuntu:${RELEASE}_stable
+
+RUN set -ex ; \
+    export DEBIAN_FRONTEND=noninteractive; \
+    apt update ; \
+    apt install -y systemd systemd-sysv iproute2 python3 sudo hostname procps ca-certificates gnupg ; \
+    apt clean all ; \
+    rm -rf /var/lib/apt/lists/* ;
+
+RUN truncate -s0 /etc/machine-id
+
+STOPSIGNAL SIGRTMIN+3
+
+CMD [ "/sbin/init" ]