Added path for drone

.drone.yml

@@ -1,13 +1,13 @@
 workspace:
   base: /app
-  path: go/deps/bin
+  path: .
 
 pipeline:
   backend: 
     image: golang
     environment:
       - GOPATH=/app/go/deps:/app/go
-      - PATH=\$PATH:/app/go/deps/bin
+      - PATH+=:/app/go/deps/bin
     commands: 
       - go get -v github.com/axw/gocov/gocov
       - go get -v -d ./go/src/...