fix(ci-runner): wait for docker daemon before building test image

docker build was failing intermittently with 'cannot connect to the
docker daemon' because the job started before the docker-dind sidecar
finished starting up. Poll docker info until the daemon responds
before attempting login/build/push.

.gitea/workflows/quality-gate.yml

@@ -81,6 +81,15 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Wait for docker daemon
+        run: |
+          for i in $(seq 1 30); do
+            docker info > /dev/null 2>&1 && break
+            echo "waiting for docker daemon... ($i/30)"
+            sleep 2
+          done
+          docker info
+
       - name: Build and push test image
         run: |
           docker login git.byting-pandas.ninja -u ${{ secrets.REGISTRY_USER }} -p ${{ secrets.REGISTRY_TOKEN }}