Add Docker Buildx setup to CI workflow

Added Docker Buildx setup step before building the ML Docker image.

Author: Santhosh-p653

.github/workflows/ci-ml.yml

@@ -1,3 +1,4 @@
+
 name: CI — ML Service
 
 on:
@@ -27,12 +28,10 @@ jobs:
       - name: Install lint dependencies
         run: |
           pip install flake8 black isort
-          # Avoid heavy ML deps (torch/tensorflow) in lint — install only what's needed
           [ -f ml/requirements-lint.txt ] && pip install -r ml/requirements-lint.txt || true
           [ -f ml/requirements.txt ] && pip install -r ml/requirements.txt --no-deps || true
 
       - name: Black formatting check
-        # Allow failure if ml/ is mostly empty / not yet written
         run: black --check ml/ || echo "::warning::Black check failed — ml/ may be incomplete"
 
       - name: isort import order check
@@ -83,6 +82,9 @@ jobs:
             type=sha,prefix=sha-
             type=raw,value=latest,enable={{is_default_branch}}
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Build and push ML Docker image
         uses: docker/build-push-action@v5
         with:
@@ -93,3 +95,4 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
+```