Migrate from NGS to self-hosted

[ezio-melotti]

This issue is used to track what needs to be done to update the beta workflow in order to:

1. move the NGS deployment to py.simoc.space (self-hosted server)
2. support multiple deployment (alpha/beta/ngs) on py.simoc.space

These are the steps:

• set envvar(s) with branch names and show them in alpha/beta deployments
  • Print the branch names in dev builds simoc-web#403
  • Print the branch names in dev builds #341
• make Docker network and containers dynamic to support multiple deployment (Support multiple deployments on the same host #360)
  • test multiple deployments locally manually
  • test multiple deployments on beta manually
  • test multiple deployments using the GH workflow
• stop using Iurii's DockerHub (Add new deployment workflow #385)
  • build images directly on the server? (Add new deployment that builds the frontend on GitHub #386)
  • build on GitHub and transfer them?
• replace Iurii's SSH key for deployment
• figure out the SSL stuff
• add alpha/beta/ngs workflow dropdown (done for beta/ngs)
• migrate DB data from GCP (we started with a new DB)
• hibernate GCP