Fix nvm url in Dockerfile

3 jobs for master in 8 minutes and 56 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Lint
passed #15190
lint

00:01:22

 
  Test Backend
passed #15191
test_backend

00:04:46

 
  Test Frontend
passed #15192
test_frontend_unit

00:02:46