docker creds

.github/workflows/release.yaml

@@ -57,14 +57,23 @@ jobs:
     needs:
     - code-quality
     runs-on: mosaic-8wide
+    if: github.repository_owner == 'mosaicml'
     steps:
     - name: Checkout source
       uses: actions/checkout@v3
 
+    - name: Setup Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Login to DockerHub
+      uses: docker/login-action@v2
+      with:
+        username: ${{ secrets.DOCKER_HUB_USERNAME }}
+        password: ${{ secrets.DOCKER_HUB_PASSWORD }}
+
     - name: Define Docker tags
       id: define-tags
       run: |
-        # Replace / with _ in github.ref_name
         BRANCH_NAME="${{ github.ref_name }}"
         TAG_NAME=$(echo "${BRANCH_NAME}" | sed 's/\//_/g')
         echo "BRANCH_NAME=${BRANCH_NAME}" >> $GITHUB_ENV