fix panic in lint

Signed-off-by: Jess Frazelle <acidburn@microsoft.com>
diff --git a/Dockerfile.dev b/Dockerfile.dev
index 9fb9be6..6e4e2ef 100644
--- a/Dockerfile.dev
+++ b/Dockerfile.dev
@@ -1,4 +1,4 @@
-FROM golang:alpine
+FROM golang:1.10-alpine
 
 ENV PATH /go/bin:$PATH
 ENV GOPATH /go