diff --git a/Dockerfile b/Dockerfile
index 2fe4799d460fb725810f99d6f4524afcd1fd957e..88ff8896aabeec6c8af54bde1be9f2083b6a2ef4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,10 @@
 FROM ubuntu:17.10
 LABEL maintainer="Huan LI <zixia@zixia.net>"
 
-ENV NPM_CONFIG_LOGLEVEL warn
 ENV DEBIAN_FRONTEND     noninteractive
+ENV LC_ALL              C.UTF-8
+ENV NODE_ENV            $NODE_ENV
+ENV NPM_CONFIG_LOGLEVEL warn
 
 # Installing the 'apt-utils' package gets rid of the 'debconf: delaying package configuration, since apt-utils is not installed'
 # error message when installing any other package with the apt-get package manager.
diff --git a/Dockerfile.onbuild b/Dockerfile.onbuild
index 2bd32d445f68cc49de3c78c354a05b1d3ca14012..e9f9b2de912411a86fd29410cc4ee0f41db4864e 100644
--- a/Dockerfile.onbuild
+++ b/Dockerfile.onbuild
@@ -1,9 +1,5 @@
 FROM zixia/wechaty
 
-RUN sudo mkdir /app/ \
-    && sudo chown -R bot:bot /app/
-WORKDIR /app/
-
 ONBUILD ARG NODE_ENV
 ONBUILD ENV NODE_ENV $NODE_ENV