chore: add continuous deployment

Author: tdutrion

.github/workflows/deploy.yml

@@ -0,0 +1,42 @@
+name: Build and Deploy
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Build Docker image
+        run: docker build -t scotlandphp-builder .
+
+      - name: Run build in Docker container
+        run: |
+          docker run --rm \
+            -v ${{ github.workspace }}:/app \
+            -w /app \
+            scotlandphp-builder \
+            sh -c "composer install && php vendor/bin/robo build --dist"
+
+      - name: Fix permissions
+        run: sudo chown -R $USER:$USER dist
+
+      - name: Deploy to GitHub Pages
+        run: |
+          cd dist
+          echo 'community.scotlandphp.co.uk' > CNAME
+          git init
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add -A
+          git commit -m "Deploy to GitHub Pages: ${{ github.sha }}"
+          git push -f https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}.git HEAD:gh-pages