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|
{ nixpkgsPath ? <nixpkgs>
, ociconfig
, name
, ...}:
let
pkgs = import nixpkgsPath {};
dummyOption = with pkgs.lib; mkOption {
type = types.attrs;
default = {};
};
systemModule = { lib, config, ... }: {
options = {
toplevel = lib.mkOption {
type = lib.types.str;
};
systemd = with lib; {
services = dummyOption;
targets = dummyOption;
timers = dummyOption;
};
environment = dummyOption;
users.users = dummyOption;
users.groups = dummyOption;
meta = dummyOption;
networking.enableIPv6 = lib.mkOption {
type = lib.types.bool;
default = false;
};
};
config._module.args.pkgs = pkgs;
};
config = pkgs.lib.evalModules {
modules = [
systemModule
ociconfig
"${nixpkgsPath}/nixos/modules/misc/assertions.nix"
];
};
in pkgs.dockerTools.buildImage {
inherit name;
contents = pkgs.coreutils;
runAsRoot = (with pkgs.lib;
strings.concatStrings
(mapAttrsToList
(n: u: if u ? createHome && u.createHome then ("mkdir -p ${u.home}\n") else "")
config.config.users.users));
config = with pkgs.lib; {
Cmd = pkgs.writeShellScript "main-entrypoint"
(strings.concatStrings
(map (command: "${command}&")
(mapAttrsToList
(name: service:
(pkgs.writeShellScript
"systemd-script-${name}"
''
#!${pkgs.dash.outPath}/bin/sh
set -ueo pipefail
${if service ? preStart
then ''
echo ${escapeShellArg name}: running preStart script
${service.preStart}
''
else ""}
echo ${name}: starting ...
${if service ? serviceConfig && service.serviceConfig ? WorkingDirectory
then "cd ${service.serviceConfig.WorkingDirectory}"
else ""}
${if service ? environment
then (strings.concatStrings
(mapAttrsToList
(n: k: "export ${n}=${escapeShellArg k}\n")
service.environment))
+ service.script
else ""}
'').outPath)
config.config.systemd.services)) + "\n wait");
};
}
|
