Avoid duplicate Docker socket mount

.drone.yml

@@ -14,22 +14,11 @@ trigger:
 steps:
   - name: build-image
     image: docker.m.daocloud.io/library/docker:27-cli
-    volumes:
-      - name: dockersock
-        path: /var/run/docker.sock
     commands:
       - docker build -t cdchen-backend:docker .
 
   - name: deploy
     image: docker.m.daocloud.io/library/docker:27-cli
-    volumes:
-      - name: dockersock
-        path: /var/run/docker.sock
     commands:
       - docker rm -f cdchen-backend || true
       - docker run -d --name cdchen-backend --restart unless-stopped -p 8089:8080 cdchen-backend:docker
-
-volumes:
-  - name: dockersock
-    host:
-      path: /var/run/docker.sock