Fix nvm url in Dockerfile

3 jobs for master in 8 minutes and 57 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Lint
passed #15158
lint

00:01:20

 
  Test Backend
passed #15159
test_backend

00:04:45

 
  Test Frontend
passed #15160
test_frontend_unit

00:02:50