update dockerfile

2 jobs for master in 3 minutes and 3 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
failed #2968
docker
build

00:03:03

 
  Deploy
skipped #2969
docker
deploy_latest
 
Name Stage Failure
failed
build Build
npm ERR! Exit status 2
npm ERR!
npm ERR! Failed at the rhymc-attacker@1.0.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2020-10-03T05_59_42_236Z-debug.log
The command '/bin/sh -c npm run build' returned a non-zero code: 2
ERROR: Job failed: exit status 1