fix last line of \\

.travis.yml

@@ -7,6 +7,11 @@ os:
   - linux
   - osx
 
+addons:
+  apt:
+    packages:
+      - xvfb
+
 cache:
   directories:
     - node_modules
@@ -14,19 +19,20 @@ cache:
 services:
   - docker
 
+
 install:
-  - if [ "$TRAVIS_OS_NAME" == 'osx' ]; then brew tap caskroom/cask; fi 
-  - if [ "$TRAVIS_OS_NAME" == 'osx' ]; then brew install brew-cask; fi
+  - if [ "$TRAVIS_OS_NAME" == 'osx' ]; then brew update; brew cleanup; brew cask cleanup; fi 
+  - if [ "$TRAVIS_OS_NAME" == 'osx' ]; then brew uninstall --force brew-cask; brew update; fi
   - if [ "$TRAVIS_OS_NAME" == 'osx' ]; then brew cask install google-chrome; fi
-  
+
   - if [ "$TRAVIS_OS_NAME" == 'linux' ]; then export DISPLAY=':99.0'; fi
   - if [ "$TRAVIS_OS_NAME" == 'linux' ]; then (Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &); fi
 
 script:
   - echo $TRAVIS_OS_NAME
   - npm test
-  - if [ "$TRAVIS_OS_NAME" == "linux" ]; then docker build -t zixia/wechaty .; fi
-  - if [ "$TRAVIS_OS_NAME" == "linux" ]; then docker run zixia/wechaty test; fi
+  - if [ "$TRAVIS_OS_NAME" == "linux" ]; then docker build -t zixia/wechaty:test .; fi
+  - if [ "$TRAVIS_OS_NAME" == "linux" ]; then docker run zixia/wechaty:test test; fi
 
 notifications:
   webhooks:

Dockerfile

 FROM node:6.3.1-onbuild
 
 RUN apt-get update && apt-get install -y \
-  xvfb \
+  xvfb
 
 COPY entrypoint.sh /entrypoint.sh
 RUN bash -n /entrypoint.sh && chmod a+x /entrypoint.sh