{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

  outputs = { self, nixpkgs }: {

    nixosConfigurations.container = nixpkgs.lib.nixosSystem {
      system = "x86_64-linux";
      modules =
        [
        ( import ./sharkey-service.nix )
        ({ pkgs, ... }: {
            boot.isContainer = true;

            # Let 'nixos-version --json' know about the Git revision
            # of this flake.
            system.configurationRevision = nixpkgs.lib.mkIf (self ? rev) self.rev;

            # Network configuration.
            networking.useDHCP = false;
            networking.firewall.allowedTCPPorts = [ 3000 ];

            system.stateVersion = "24.04";

            services.sharkey = {
                enable = true;
                package = (pkgs.callPackage ./sharkey.nix {});
                settings = {
                    url = "https://sharkey.localhost";
                };
                redis.createLocally = true;
                database.createLocally = true;
            };
          })
        ];
    };

  };
}