fix act-runner: remove duplicate socket mount, use docker_host + privileged

act-runner/config.yaml

@@ -5,6 +5,8 @@ runner:
   file: /data/.runner
   capacity: 2
   timeout: 3h
+  envs:
+    DOCKER_HOST: unix:///var/run/docker.sock
 
 container:
   network: "ci"
@@ -12,5 +14,4 @@ container:
   docker_host: unix:///var/run/docker.sock
   valid_volumes:
     - /var/run/docker.sock
-  options: "-v /var/run/docker.sock:/var/run/docker.sock"
-  workdir_parent: ""
+    - /**