Add Fedora 43 Ansible base image and GitHub Actions test workflow

.github/docker/fedora-ansible-43.Dockerfile

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+FROM fedora:43
+
+# Update all packages
+RUN dnf -y upgrade
+
+# Install Python and Ansible (system packages)
+RUN dnf -y install \
+    python3 \
+    python3-pip \
+    ansible
+
+# Clean up dnf caches to reduce image size
+RUN dnf clean all && rm -rf /var/cache/dnf
+
+WORKDIR /workspace

.github/workflows/ansible-site-test.yml

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+name: Ansible Site Test
+
+on:
+  workflow_dispatch:
+  push:
+    paths:
+      - 'ansible/**'
+      - 'site.yml'
+      - '.github/workflows/ansible-site-test.yml'
+  pull_request:
+    paths:
+      - 'ansible/**'
+      - 'site.yml'
+      - '.github/workflows/ansible-site-test.yml'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-ansible-base-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    outputs:
+      image_name_lower: ${{ steps.lowercase.outputs.IMAGE_NAME_LOWER }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set image name to lowercase
+        id: lowercase
+        run: echo "IMAGE_NAME_LOWER=${IMAGE_NAME,,}" >> $GITHUB_OUTPUT
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ steps.lowercase.outputs.IMAGE_NAME_LOWER }}/fedora-ansible-43-ansible
+          tags: |
+            type=raw,value=latest
+            type=sha,format=long
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: .github/docker/fedora-ansible-43.Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+  ansible-site-test:
+    needs: build-ansible-base-image
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: read
+    container:
+      image: ghcr.io/${{ needs.build-ansible-base-image.outputs.image_name_lower }}/fedora-ansible-43-ansible:latest
+      credentials:
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Ansible Galaxy collections
+        working-directory: ansible
+        run: ansible-galaxy collection install -r requirements.yml
+
+      - name: Run Ansible playbook
+        working-directory: ansible
+        run: ansible-playbook site.yml --syntax-check