Fix Dockerfile build dependency (#3457)
Fix Dockerfile build dependency (#3457)

The current nodejs dependency does not include npm for some reason. Following the current instructions will cause a failure. There is no need to keep nodejs as it is a dependency of npm.
0x00evil/phoenix,Gazler/phoenix,phoenixframework/phoenix,michalmuskala/phoenix,nshafer/phoenix,phoenixframework/phoenix,michalmuskala/phoenix,0x00evil/phoenix,eksperimental/phoenix,rafbgarcia/phoenix,rafbgarcia/phoenix,0x00evil/phoenix,jwarwick/phoenix,eksperimental/phoenix,jwarwick/phoenix,optikfluffel/phoenix,rafbgarcia/phoenix,keathley/phoenix,phoenixframework/phoenix,nshafer/phoenix,nshafer/phoenix,optikfluffel/phoenix,Gazler/phoenix,optikfluffel/phoenix,keathley/phoenix