use pre-built actions rather than install ruff.

Author: Eric Liu

.github/workflows/build.yaml

@@ -17,22 +17,16 @@ jobs:
       - name: Checkout Repo
         uses: actions/checkout@v4
 
-      # Add Python and Ruff linting steps
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: '3.11'
-      
-      - name: Install Ruff
-        run: pip install ruff>=0.12.5
-      
+      # Ruff linting steps
       - name: Run Ruff linter
-        working-directory: ./app
-        run: ruff check .
-      
+        uses: astral-sh/ruff-action@v1
+        with:
+          args: check ./app
+
       - name: Run Ruff formatter check
-        working-directory: ./app
-        run: ruff format --check .
+        uses: astral-sh/ruff-action@v1
+        with:
+          args: "format --check"
 
       - name: Build Docker image
         working-directory: ./app