changed branch name and add volume lines

.drone.yml

@@ -2,8 +2,7 @@ kind: pipeline
 name: default
 trigger:
   branch:
-    - main
+    - master
-
   event:
     - push
 workspace:
@@ -23,8 +22,13 @@ steps:
 
     when:
       branch:
-        - main
+        - master
 
     volumes:
       - name: docker
         path: /var/run/docker.sock
+        
+volumes:
+  - name: docker
+    host:
+      path: /var/run/docker.sock