diff --git a/backend/scripts/install-nodejs.sh b/backend/scripts/install-nodejs.sh
index 1ca73b2d..358cbc15 100644
--- a/backend/scripts/install-nodejs.sh
+++ b/backend/scripts/install-nodejs.sh
@@ -14,4 +14,9 @@ ln -s $HOME/.nvm/versions/node/v8.12.0/bin/node /usr/local/bin/node
 
 # environments manipulation
 export NODE_PATH=$HOME.nvm/versions/node/v8.12.0/lib/node_modules
-export PATH=$NODE_PATH:$PATH
\ No newline at end of file
+export PATH=$NODE_PATH:$PATH
+
+# install default dependencies
+npm config set PUPPETEER_DOWNLOAD_HOST=https://npm.taobao.org/mirrors
+npm install puppeteer -g --unsafe-perm=true
+npm install puppeteer-core puppeteer-chromium-resolver crawlab-sdk -g --ignore-scripts
diff --git a/docker-compose.yml b/docker-compose.yml
index 637083b2..6ad3efd1 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -30,6 +30,7 @@ services:
       # CRAWLAB_NOTIFICATION_MAIL_SENDERIDENTITY: admin@exmaple.com  # sender ID 发送者 ID
       # CRAWLAB_NOTIFICATION_MAIL_SMTP_USER: username  # SMTP username SMTP 用户名
       # CRAWLAB_NOTIFICATION_MAIL_SMTP_PASSWORD: password  # SMTP password SMTP 密码
+      # CRAWLAB_SERVER_LANG_NODE: "Y"  # 预安装 Node.js 语言环境
     ports:    
       - "8080:8080" # frontend port mapping 前端端口映射
     depends_on:
diff --git a/frontend/src/components/File/FileDetail.vue b/frontend/src/components/File/FileDetail.vue
index 4e11e019..ee88cef7 100644
--- a/frontend/src/components/File/FileDetail.vue
+++ b/frontend/src/components/File/FileDetail.vue
@@ -42,6 +42,8 @@ export default {
         mode: this.language,
         theme: 'darcula',
         styleActiveLine: true,
+        smartIndent: true,
+        indentUnit: 4,
         lineNumbers: true,
         line: true,
         matchBrackets: true