use global trigger for pipeline

.drone.yml

@@ -3,6 +3,10 @@ kind: pipeline
 type: docker
 name: main
 
+trigger:
+  branch:
+    - master
+
 steps:
   - name: build
     image: docker:latest
@@ -11,9 +15,6 @@ steps:
         path: /var/run/docker.sock
     commands:
       - docker build -t registry.jfmonty2.com/minebot:latest .
-    when:
-      branch:
-        - master
 
   - name: deploy
     image: docker:latest
@@ -26,9 +27,6 @@ steps:
     commands:
       - echo $REGISTRY_PWD | docker login -u drone --password-stdin registry.jfmonty2.com
       - docker push registry.jfmonty2.com/minebot:latest
-    when:
-      branch:
-        - master
 
 volumes:
   - name: docker-socket