Fix nvm url in Dockerfile

3 jobs for master in 8 minutes and 46 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Lint
passed #15177
lint

00:01:19

 
  Test Backend
passed #15179
test_backend

00:04:35

 
  Test Frontend
passed #15180
test_frontend_unit

00:02:51