Add Docker Hub login

Author: un-def

.github/workflows/release.yml

@@ -80,13 +80,18 @@ jobs:
     - run: |
         mv dstack-sshproxy-* dstack-sshproxy
       working-directory: build
+    - name: Login to Docker Hub
+      uses: docker/login-action@v4
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v4
     - name: Build and push
       uses: docker/build-push-action@v7
       with:
         context: .
-        push: false
+        push: true
         tags: |
           dstackai/sshproxy:${{ needs.set-version.outputs.version }}
           ${{ case(fromJSON(needs.set-version.outputs.latest), 'dstackai/sshproxy:latest', '') }}