code quality fixes

.drone.yml

@@ -7,7 +7,7 @@ steps:
   image: golang:latest
   commands:
   - go install honnef.co/go/tools/cmd/staticcheck@latest
-  - staticcheck ./src/internal/...
+  - cd src && staticcheck ./...
   volumes:
   - name: gopath
     path: /go
@@ -16,7 +16,7 @@ steps:
   image: golang:latest
   commands:
   - go install golang.org/x/lint/golint@latest
-  - golint ./src/internal/...
+  - golint ./src/...
   volumes:
   - name: gopath
     path: /go
@@ -24,7 +24,7 @@ steps:
 - name: analyze
   image: golang:latest
   commands:
-  - go vet ./src/internal/...
+  - cd src && go vet ./...
   volumes:
   - name: gopath
     path: /go