Refactor Docker deployment process to use Buildx for improved image building and caching

.dockerignore

@@ -1,6 +1,6 @@
 node_modules
 .next
-Dockerfile
 .git
-.gitignore
-*.mdx
+.gitea
+*.md
+.env*

.gitea/workflows/deploy.yml

@@ -14,10 +14,25 @@ jobs:
       - name: Checkout Code
         uses: actions/checkout@v3
 
-      - name: Rebuild and Deploy with Docker Compose
-        run: |
-          docker build --target release -t local/gabriel-blog:latest .
-          docker compose up -d
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
 
-          # Clean up any old, unused images to save disk space
+      - name: Build image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          target: release
+          tags: local/gabriel-blog:latest
+          load: true
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache-new,mode=max
+
+      - name: Rotate cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache
+
+      - name: Deploy and cleanup
+        run: |
+          docker compose up -d
           docker image prune -f