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{ config, lib, pkgs, ... }:
{
boot.kernel.sysctl."net.ipv4.ip_forward" = true;
services.gitlab-runner = {
enable = true;
services= {
# runner for building in docker via host's nix-daemon
# nix store will be readable in runner, might be insecure
nix = with lib;{
# File should contain at least these two variables:
# `CI_SERVER_URL`
# `REGISTRATION_TOKEN`
registrationConfigFile = "${config.krebs.secret.directory}/shackspace-gitlab-ci";
dockerImage = "alpine";
dockerVolumes = [
"/nix/store:/nix/store:ro"
"/nix/var/nix/db:/nix/var/nix/db:ro"
"/nix/var/nix/daemon-socket:/nix/var/nix/daemon-socket:ro"
];
dockerDisableCache = true;
# TODO: use the channel from <stockholm/krebs/nixpkgs.json>
preBuildScript = pkgs.writeScript "setup-container" ''
mkdir -p -m 0755 /nix/var/log/nix/drvs
mkdir -p -m 0755 /nix/var/nix/gcroots
mkdir -p -m 0755 /nix/var/nix/profiles
mkdir -p -m 0755 /nix/var/nix/temproots
mkdir -p -m 0755 /nix/var/nix/userpool
mkdir -p -m 1777 /nix/var/nix/gcroots/per-user
mkdir -p -m 1777 /nix/var/nix/profiles/per-user
mkdir -p -m 0755 /nix/var/nix/profiles/per-user/root
mkdir -p -m 0700 "$HOME/.nix-defexpr"
. ${pkgs.nix}/etc/profile.d/nix.sh
${pkgs.nix}/bin/nix-channel --add https://nixos.org/channels/nixos-20.09 nixpkgs
${pkgs.nix}/bin/nix-channel --update nixpkgs
${pkgs.nix}/bin/nix-env -i ${concatStringsSep " " (with pkgs; [ nix cacert git openssh ])}
'';
environmentVariables = {
ENV = "/etc/profile";
USER = "root";
NIX_REMOTE = "daemon";
PATH = "/nix/var/nix/profiles/default/bin:/nix/var/nix/profiles/default/sbin:/bin:/sbin:/usr/bin:/usr/sbin";
NIX_SSL_CERT_FILE = "/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt";
};
tagList = [ "nix" "shacklan" ];
};
};
};
systemd.services.gitlab-runner.restartIfChanged = false;
systemd.services.docker.restartIfChanged = false;
}
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