feat: implement Docker-based production deployment pipeline with automated Ansible provisioning, CI/CD workflows, and Caddy server configuration.

.github/workflows/deploy-dev.yml

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+name: Deploy to Dev
+
+on:
+  workflow_call:
+  workflow_dispatch:
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Ansible and collections
+        run: |
+          pip install --break-system-packages ansible
+          ansible-galaxy collection install ansible.posix community.docker
+
+      - name: Set up SSH key
+        run: |
+          mkdir -p ~/.ssh
+          echo "${{ secrets.SRV_SSH_KEY }}" > ~/.ssh/deploy_key
+          chmod 600 ~/.ssh/deploy_key
+
+      - name: Run Ansible playbook
+        run: |
+          ansible-playbook \
+            -i infra/development/hosts.ini \
+            -e "ansible_ssh_private_key_file=~/.ssh/deploy_key" \
+            infra/development/site/deploy-playbook.yml

.github/workflows/deploy-prod.yml

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+name: Deploy to Production
+
+on:
+  workflow_call:
+  workflow_dispatch:
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: main
+
+      - name: Install Ansible and collections
+        run: |
+          pip install --break-system-packages ansible
+          ansible-galaxy collection install ansible.posix community.docker
+
+      - name: Set up SSH key
+        run: |
+          mkdir -p ~/.ssh
+          echo "${{ secrets.SRV_SSH_KEY }}" > ~/.ssh/deploy_key
+          chmod 600 ~/.ssh/deploy_key
+
+      - name: Run Ansible playbook
+        run: |
+          ansible-playbook \
+            -i infra/production/hosts.ini \
+            -e "ansible_ssh_private_key_file=~/.ssh/deploy_key" \
+            infra/production/site/deploy-playbook.yml

.github/workflows/on-create-tag.yml

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+name: On Create Tag
+
+on:
+  push:
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+'
+
+jobs:
+  publish:
+    uses: ./.github/workflows/publish-image.yml
+    with:
+      build_mode: production
+    secrets: inherit
+
+  update-compose:
+    needs: publish
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout main
+        uses: actions/checkout@v4
+        with:
+          ref: main
+          token: ${{ github.token }}
+
+      - name: Update image tag in production compose.yml
+        run: |
+          VERSION=${GITHUB_REF_NAME#v}
+          sed -i "s|\(image:.*:\)[^[:space:]]*|\1${VERSION}|" infra/production/site/compose.yml
+
+      - name: Commit and push
+        run: |
+          git config user.name "respellion-bot"
+          git config user.email "no-reply.git@respellion.nl"
+          git add infra/production/site/compose.yml
+          git commit -m "chore: update prod image to ${GITHUB_REF_NAME#v}"
+          git push origin main
+
+  deploy-prod:
+    needs: update-compose
+    uses: ./.github/workflows/deploy-prod.yml
+    secrets: inherit

.github/workflows/on-pull-request-to-main.yml

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+name: On Pull Request to Main
+
+on:
+  pull_request:
+    branches: [main]
+  workflow_call:
+
+jobs:
+  test:
+    uses: ./.github/workflows/test.yml
+
+  publish:
+    needs: test
+    uses: ./.github/workflows/publish-image.yml
+    secrets: inherit
+
+  deploy-dev:
+    needs: publish
+    uses: ./.github/workflows/deploy-dev.yml
+    secrets: inherit

.github/workflows/on-push-main.yml

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+name: On Push to Main
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  test:
+    uses: ./.github/workflows/test.yml
+
+  publish:
+    needs: test
+    uses: ./.github/workflows/publish-image.yml
+    with:
+      build_mode: development
+    secrets: inherit
+
+  deploy-dev:
+    needs: publish
+    uses: ./.github/workflows/deploy-dev.yml
+    secrets: inherit

.github/workflows/publish-image.yml

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+name: Publish Image
+
+on:
+  workflow_call:
+    inputs:
+      build_mode:
+        description: "Build mode (development or production)"
+        type: string
+        default: production
+  workflow_dispatch:
+    inputs:
+      build_mode:
+        description: "Build mode (development or production)"
+        type: string
+        default: production
+
+env:
+  REGISTRY: git.labs.respellion.tech
+  IMAGE: respellion/learning-platform/learning-platform
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: respellion-bot
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE }}
+          tags: |
+            type=sha,format=short,prefix=
+            type=raw,value=latest
+            type=semver,pattern={{version}}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            BUILD_MODE=${{ inputs.build_mode }}

.github/workflows/test.yml

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+name: Test
+
+on:
+  workflow_call:
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build Docker image
+        run: docker build -t learning-platform .
+
+      - name: Build test image
+        run: |
+          cat > Dockerfile.test <<'EOF'
+          FROM learning-platform
+          COPY Caddyfile.test /etc/caddy/Caddyfile
+          EOF
+          docker build -t learning-platform-test -f Dockerfile.test .
+
+      - name: Start container
+        run: |
+          docker run -d --network gitea --name test-container learning-platform-test
+          sleep 5
+
+      - name: Test homepage
+        run: |
+          status=$(curl -s -o /dev/null -w "%{http_code}" http://test-container)
+          if [ "$status" != "200" ]; then
+            echo "Homepage failed with status $status"
+            exit 1
+          fi
+          echo "✓ Homepage OK"
+
+      - name: Test security headers
+        run: |
+          headers=$(curl -sI http://test-container)
+          echo "$headers" | grep -q "X-Frame-Options" || (echo "Missing X-Frame-Options" && exit 1)
+          echo "$headers" | grep -q "X-Content-Type-Options" || (echo "Missing X-Content-Type-Options" && exit 1)
+          echo "✓ Security headers OK"
+
+      - name: Cleanup
+        if: always()
+        run: docker stop test-container && docker rm test-container