trying to fix project build with more complex structure

.drone.yml

@@ -1,11 +1,17 @@
+# NOTE: Refer drone Go example http://readme.drone.io/0.5/usage/golang-example/
+workspace:
+  base: /go
+  path: src/github.com/josebarn/drone-with-go
+
 pipeline:
   build:
-    image: ${IMAGE}
-    commands:
+    image: golang
+    script:
+      - go get
       - go build
 
   unit-test:
-    image: ${IMAGE}
+    image: golang
     commands:
       - go test ./api
 
@@ -16,7 +22,3 @@ pipeline:
     dockerfile: ./docker/Dockerfile
     secrets: [ DOCKER_USERNAME, DOCKER_PASSWORD ]
 #    debug: true
-
-matrix:
-  IMAGE:
-    - golang:latest

.drone.yml.sig

@@ -1 +1 @@
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+eyJhbGciOiJIUzI1NiJ9.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.Jwt8cP9RLe5Ww_5Tt0muQOE9BDDLlngBMXSyTH9tAMs