fix some error

Dockerfile

@@ -11,5 +11,5 @@ COPY . /usr/src/app
 ENV PORT 80
 EXPOSE 80
 
-ENTRYPOINT ["node", "./bin/www"]
+ENTRYPOINT ["npm", "./bin/www"]
 # CMD forever start --minUptime 1000 --spinSleepTime 1000 ./bin/www