diff --git a/Dockerfile.dapper b/Dockerfile.dapper
index 28f65225..a59903f3 100644
--- a/Dockerfile.dapper
+++ b/Dockerfile.dapper
@@ -142,6 +142,9 @@ RUN curl -fL ${!BUILD_DOCKER_URL} > /usr/bin/docker && \
 # Install Trash
 RUN go get github.com/rancher/trash
 
+# Install golint
+RUN go get github.com/golang/lint/golint
+
 RUN go get gopkg.in/check.v1
 
 # Install dapper
diff --git a/config/validate.go b/config/validate.go
index 42cb685b..142ec923 100644
--- a/config/validate.go
+++ b/config/validate.go
@@ -5,7 +5,8 @@ import (
 	"github.com/xeipuuv/gojsonschema"
 )
 
-// TODO: use this function from libcompose
+// ConvertKeysToStrings is temporarily copied from libcompose
+// TODO: just import this in the future
 func ConvertKeysToStrings(item interface{}) interface{} {
 	switch typedDatas := item.(type) {
 	case map[string]interface{}: