fix: all in one command

action.yml

@@ -30,18 +30,11 @@ runs:
       shell: bash
       run: tar -xf /var/lib/buildkit/buildkit.tar.gz -C /var/lib/buildkit
 
-    - name: Launch buildkit daemon
-      shell: bash
-      run: /var/lib/buildkit/bin/buildkitd &
-
-    - name: Wait for buildkit
-      shell: bash
-      run: |
-        while [ ! -f /run/buildkit/buildkitd.sock ]; do sleep 0.1; done
-
     - name: Run buildkit build
       shell: bash
       run: |
+        /var/lib/buildkit/bin/buildkitd & \
+        while [ ! -f /run/buildkit/buildkitd.sock ]; do sleep 0.1; done \
         /var/lib/buildkit/binbin/buildctl build \
             --frontend=dockerfile.v0 \
             --local context=${{ inputs.context }} \