update drone yaml

.drone.yml

@@ -1,9 +1,13 @@
-kind: pipeline
-name: default
+workspace:
+  base: /vol
+  path: src/first
 
-steps:
-- name: test
+pipeline:
+  test:
     image: golang
     commands:
       - go test
-  - go build
+  build:
+    image: golang
+    commands:
+      - go build -o app