{ pkgs, ... }:
{
  virtualisation.arion = {
    backend = "docker";
    projects = {
      "db".settings.services."db".service = {
        restart = "unless-stopped";
        build.context = "/nix/store";
        build.dockerfile = builtins.baseNameOf "${pkgs.writeScript "pgDockerfile" ''
            FROM postgres:16
            # install packages
            RUN apt-get update \
                && apt-get install -y --no-install-recommends \
                    postgresql-16-postgis \
                && rm -rf /var/lib/apt/lists/*
          ''}";
        environment = {
          POSTGRES_PASSWORD = "balls1234";
          POSTGRES_USER = "admin";
          POSTGRES_DATABASE = "test_db";
        };
        ports = [ "5432:5432" ];
        volumes = [
          "/mnt/postgres/data:/var/lib/postgres/data"
          "${pkgs.writeScript "load_extensions" ''
            psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" <<EOF
            create extension postgis;
            select * FROM pg_extension;
            EOF
           ''}:/docker-entrypoint-initdb.d/"
        ];
      };
    };
  };

}