summaryrefslogtreecommitdiff
path: root/nix-modules
diff options
context:
space:
mode:
Diffstat (limited to 'nix-modules')
-rw-r--r--nix-modules/docker-nixos-modules.nix77
-rw-r--r--nix-modules/example.nix2
2 files changed, 47 insertions, 32 deletions
diff --git a/nix-modules/docker-nixos-modules.nix b/nix-modules/docker-nixos-modules.nix
index 47107a7..6ab2785 100644
--- a/nix-modules/docker-nixos-modules.nix
+++ b/nix-modules/docker-nixos-modules.nix
@@ -45,46 +45,63 @@ let
];
};
+
+
in pkgs.dockerTools.buildImage {
inherit name;
+ # coreutils are included since we need them in startup scripts
contents = pkgs.coreutils;
+ # create home directories of users (some services create
+ # their state paths using this, so even without having
+ # users it's important)
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");
+ # this maps all defined systemd services to simple shell
+ # scripts that are started when the docker container runs.
+ # Note that many features of the systemd.services config
+ # are just ignored (e.g. no auto-restarts yet)
+ config = with pkgs.lib; with pkgs.lib.strings; {
+ Cmd = pkgs.writeScript "main-entrypoint"
+ ("#!${pkgs.dash.outPath}/bin/dash\n" + concatStrings
+ (map (command: "${command}&\n")
+ (mapAttrsToList
+ (name: service:
+ (pkgs.writeScript "systemd-script-${name}"
+ ''
+ #!${pkgs.dash.outPath}/bin/dash
+ set -ue
+
+ # run the prestart script
+ ${optionalString (service ? preStart) ''
+ echo ${escapeShellArg name}: running preStart script
+ ${service.preStart}''}
+
+ echo ${name}: starting ...
+
+ # set up working directory
+ ${optionalString (service ? serviceConfig
+ && service.serviceConfig ? WorkingDirectory) ''
+ mkdir -p ${service.serviceConfig.WorkingDirectory}
+ cd ${service.serviceConfig.WorkingDirectory} ''}
+
+ # set up environment variables
+ ${optionalString (service ? environment)
+ (concatStrings
+ (mapAttrsToList
+ (n: k: "export ${n}=${escapeShellArg k}\n")
+ service.environment))}
+
+ # start the service
+ ${if service ? script
+ then service.script
+ else service.serviceConfig.ExecStart}
+ '').outPath)
+ config.config.systemd.services)) + "\n wait");
};
}
diff --git a/nix-modules/example.nix b/nix-modules/example.nix
index 2596df6..cbffb4a 100644
--- a/nix-modules/example.nix
+++ b/nix-modules/example.nix
@@ -8,8 +8,6 @@ import ./docker-nixos-modules.nix {
imports = [
<nixpkgs/nixos/modules/services/monitoring/grafana.nix>
- <nixpkgs/nixos/modules/services/web-servers/nginx/default.nix>
- <nixpkgs/nixos/modules/security/acme.nix>
];
services.grafana = {