add Dockerfile and github workflow

.dockerignore

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+.git/
+.github/
+Dockerfile
+Credits.txt
+README.md
+

.github/workflows/delivery.yml

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+name: Delivery
+
+on: 
+  push:
+    branches: [ master ]
+  release:
+    # Note: a current limitation is that when a release is edited after publication, then the Docker tags are not automatically updated.
+    types: [ published ]
+
+permissions:
+  contents: write
+  packages: write
+
+jobs:
+  publish-docker-image:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository }}
+          tags: |
+            type=semver,pattern={{major}}.{{minor}}.{{patch}}
+            type=raw,value=edge
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}      
+
+      - name: Build container and push to GitHub Container Registry
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/status-checks.yml

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+name: Status checks
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+  # Make it possible to trigger the checks manually.
+  workflow_dispatch:
+
+jobs:
+  docker-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      # We only run the build stage to prevent that the IRMA schemes are downloaded.
+      - name: Run Dockerfile build stage
+        run: docker build -t privacybydesign/angrygames:build .
+

Dockerfile

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+FROM php:8.0-apache
+
+WORKDIR /var/www/html
+
+ADD . .
+
+EXPOSE 80
+
+RUN chown -R www-data:www-data /var/www/html \
+    && chmod -R 755 /var/www/html
+
+CMD ["apache2-foreground"]
+