add env-sample add Dockerfile production

.config/configstore/update-notifier-npm.json

+{
+	"optOut": false,
+	"lastUpdateCheck": 1525596746559
+}
\ No newline at end of file

Dockerfile-development

@@ -9,6 +9,10 @@ COPY webpack webpack
 COPY config config
 COPY app app
 
+<<<<<<< HEAD
 EXPOSE ${PORT:-3000}
+=======
+EXPOSE ${PORT:3000}
+>>>>>>> add env-sample add Dockerfile production
 
 CMD []