Example VirtualBox VM with nginx and gogs

gogs-vbox.nix

{
  gogs =
  { config, pkgs, ... }:
  {
    deployment.targetEnv = "virtualbox";
    deployment.virtualbox.memorySize = 512;
    deployment.virtualbox.vcpu = 2;
    deployment.virtualbox.headless = true;
  };
}

gogs.nix

{
  gogs =
  { config, pkgs, ... }:
  {
    services.openssh.enable = true;
    services.gogs.enable = true;
    services.nginx.enable = true;
    services.nginx.virtualHosts."localhost".locations."/".proxyPass = "http://127.0.0.1:3000/";
    networking.firewall.allowedTCPPorts = [ 22 80 ];
  };
}