adjust drone conf

.drone.yml

@@ -6,11 +6,12 @@ name: default
 steps:
   - name: build
     image: plugins/docker:latest
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
     pull: never
     privileged: true
     settings:
       pull_image: false
-      pull: never
       username:
         from_secret: registry_username
       password:
@@ -21,6 +22,7 @@ steps:
       mirror: https://5c492fmo.mirror.aliyuncs.com
       dockerfile: ./Dockerfile
 
+
   - name: scp
     image: appleboy/drone-scp
     settings: