{ description = "A very basic flake"; inputs = { nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable"; }; outputs = { self, nixpkgs }: let pkgs = nixpkgs.legacyPackages.x86_64-linux; in { packages.x86_64-linux.default = pkgs.callPackage ( { dockerTools }: dockerTools.buildImage { name = "nix-remote-builder"; tag = "latest"; config = { Cmd = [ "${pkgs.fastfetch}" ]; }; } ) {}; }; }