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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.dockerRegistry;
in {
###### interface
options.services.dockerRegistry = {
enable = mkOption {
description = "Whether to enable docker registry server.";
default = false;
type = types.bool;
};
host = mkOption {
description = "Docker registry host or ip to bind to.";
default = "127.0.0.1";
type = types.str;
};
port = mkOption {
description = "Docker registry port to bind to.";
default = 5000;
type = types.int;
};
storagePath = mkOption {
type = types.path;
default = "/var/lib/docker/registry";
description = "Docker registry strorage path.";
};
extraConfig = mkOption {
description = ''
Docker extra registry configuration. See
<link xlink:href="https://github.com/docker/docker-registry/blob/master/config/config_sample.yml"/>
'';
default = {};
type = types.attrsOf types.str;
};
};
config = mkIf cfg.enable {
systemd.services.docker-registry = {
description = "Docker Container Registry";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
environment = {
REGISTRY_HOST = cfg.host;
REGISTRY_PORT = toString cfg.port;
GUNICORN_OPTS = "[--preload]"; # see https://github.com/docker/docker-registry#sqlalchemy
STORAGE_PATH = cfg.storagePath;
} // cfg.extraConfig;
serviceConfig = {
ExecStart = "${pkgs.pythonPackages.docker_registry}/bin/docker-registry";
User = "docker-registry";
Group = "docker";
PermissionsStartOnly = true;
};
preStart = ''
mkdir -p ${cfg.storagePath}
if [ "$(id -u)" = 0 ]; then
chown -R docker-registry:docker ${cfg.storagePath}
fi
'';
postStart = ''
until ${pkgs.curl}/bin/curl -s -o /dev/null 'http://${cfg.host}:${toString cfg.port}/'; do
sleep 1;
done
'';
};
users.extraGroups.docker.gid = mkDefault config.ids.gids.docker;
users.extraUsers.docker-registry.uid = config.ids.uids.docker-registry;
};
}
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