changed the drone config a bit

.drone.yml

@@ -7,12 +7,6 @@ steps:
   commands:
   - go test -v ./...
   - go build -v -o ./bin/drone-example .
-
----
-kind: pipeline
-name: deploy
-
-steps:
 - name: deploy
   image: docker:cli
   volumes:
@@ -22,14 +16,13 @@ steps:
   - docker build -t drone-example .
   - docker rm -f drone-example
   - docker run -d -p 127.241.212.77:1098:5000 --restart always --name drone-example drone-example
+  when:
+    event:
+    - promote
+    target:
+    - production
 
 volumes:
 - name: docker-socket
   host:
     path: /var/run/docker.sock
-
-trigger:
-  event:
-  - promote
-  target:
-  - production