Fix nvm url in Dockerfile

3 jobs for master in 8 minutes and 39 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Lint
passed #15166
lint

00:01:19

 
  Test Backend
passed #15167
test_backend

00:04:34

 
  Test Frontend
passed #15168
test_frontend_unit

00:02:45