diff --git a/web/Dockerfile b/web/Dockerfile
index 83a98e4..e26e7d4 100644
--- a/web/Dockerfile
+++ b/web/Dockerfile
@@ -19,9 +19,9 @@ RUN sh web/install.sh -p && echo "\
 if [ ! -f \"/var/uoj_data/.UOJSetupDone\" ]; then\n\
   cd /opt/uoj/web && sh install.sh -i\n\
 fi\n\
-cd /opt/uoj/web && sh install.sh -d\
 service ntp start\n\
 service apache2 start\n\
+cd /opt/uoj/web && sh install.sh -d\n\
 exec bash\n" >/opt/up && chmod +x /opt/up
 
 ENV LANG=C.UTF-8 TZ=Asia/Shanghai
diff --git a/web/install.sh b/web/install.sh
index 37e552a..21ea5ba 100644
--- a/web/install.sh
+++ b/web/install.sh
@@ -7,10 +7,10 @@ _database_host_="${DATABASE_HOST:-uoj-db}"
 _database_password_="${DATABASE_PASSWORD:-root}"
 _judger_socket_port_="${JUDGER_SOCKET_PORT:-2333}"
 _judger_socket_password_="${JUDGER_SOCKET_PASSWORD:-_judger_socket_password_}"
-_salt0_="${SALT0:-_salt0_}"
-_salt1_="${SALT1:-_salt1_}"
-_salt2_="${SALT2:-_salt2_}"
-_salt3_="${SALT3:-_salt3_}"
+_salt0_="${SALT_0:-_salt0_}"
+_salt1_="${SALT_1:-_salt1_}"
+_salt2_="${SALT_2:-_salt2_}"
+_salt3_="${SALT_3:-_salt3_}"
 _uoj_protocol_="${UOJ_PROTOCOL:-http}"
 
 getAptPackage(){