feat(.travis.yml): update .travis.yml

.travis.yml

-before_deploy: "echo 'ready?'"
+language: node_js
+before_install: 
+  - echo "`date -u '+%Y-%m-%d %H:%M:%S'` Start to build Luna"
+  - docker pull node:latest
+install:
+  - docker run -i -v `pwd`:/data -w /data node  sh -c "npm i && npm rebuild node-sass&& npm run-script build"
+script:
+  - docker build -t registry.fit2cloud.com/jumpserver/luna:test .
+  - docker push registry.fit2cloud.com/jumpserver/luna:test
+after_success:
+  - echo "SUCCESS!"
+after_failure:
+  - echo "FAILURE"