Add go-vet on arm64 device

.drone.yml

@@ -13,6 +13,7 @@ steps:
   commands:
   - apk --no-cache add build-base
   - go get -d -v
+  - go vet -v -buildvcs=false
   - go build -v -buildvcs=false -ldflags="-s -w"
 
 - name: deploy binary