toegevoegd RUN voor aanmaken directory

Dockerfile-go-server

@@ -12,6 +12,7 @@ ADD bin/battlecamp-go-server /go/bin/battlecamp-go-server
 # either manually or with a tool like "godep".)
 # RUN go install battlecamp-go-server
 
+RUN ["mkdir /go"]
 RUN ["chown -R $HOST_UID:$HOST_GID /go"]
 
 # Run the battlecamp-go-server command by default when the container starts.