Add CI workflow for build and deployment process

.gitea/workflows/ci.yaml

@@ -0,0 +1,50 @@
+name: Build and Deploy
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Write deploy key
+        run: |
+          echo "${{ secrets.DEPLOY_KEY }}" > /tmp/deploy_key
+          chmod 600 /tmp/deploy_key
+
+      - name: Log in to Gitea registry
+        run: |
+          echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login gitea.home.arpa \
+            --username ${{ secrets.REGISTRY_USERNAME }} \
+            --password-stdin
+
+      - name: Build and push backend
+        run: |
+          docker build \
+            --platform linux/amd64 \
+            -t gitea.home.arpa/nik/watch-party-backend:latest \
+            ./backend
+          docker push gitea.home.arpa/nik/watch-party-backend:latest
+
+      - name: Build and push frontend
+        run: |
+          docker build \
+            --platform linux/amd64 \
+            -t gitea.home.arpa/nik/watch-party-frontend:latest \
+            ./frontend
+          docker push gitea.home.arpa/nik/watch-party-frontend:latest
+
+      - name: Deploy to Mac Mini
+        run: |
+          ssh -o StrictHostKeyChecking=no \
+            -i /tmp/deploy_key \
+            ${{ secrets.DEPLOY_USER }}@${{ secrets.DEPLOY_HOST }} \
+            "cd ~/repo/watch-party && \
+             docker login gitea.home.arpa -u ${{ secrets.REGISTRY_USERNAME }} -p ${{ secrets.REGISTRY_PASSWORD }} && \
+             docker compose pull && \
+             docker compose up -d"