From a6570d33a6e48af069c4c8c9d08da55bf660872f Mon Sep 17 00:00:00 2001
From: Kristoffer Dalby <kradalby@kradalby.no>
Date: Mon, 7 Mar 2022 17:18:41 +0000
Subject: [PATCH] Add option to build docker image

This commit adds dockerbuild to flakes.nix:

```
nix build .#headscale-docker
```

This uses the Nix infra to build and _does not_ use Dockerfile.

It currently works on Linux (no macOS)
---
 flake.nix | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/flake.nix b/flake.nix
index a839431e..8b81a401 100644
--- a/flake.nix
+++ b/flake.nix
@@ -84,6 +84,16 @@
               buf
               clang-tools # clang-format
             ];
+
+
+          # Add entry to build a docker image with headscale
+          # caveat: only works on Linux
+          headscale-docker = pkgs.dockerTools.buildLayeredImage {
+            name = "headscale";
+            tag = "latest";
+            contents = [ pkgs.${system}.headscale ];
+            config.Entrypoint = [ (pkgs.${system}.headscale + "/bin/headscale") ];
+          };
         in
         rec {
           # `nix develop`
@@ -92,6 +102,8 @@
           # `nix build`
           packages = with pkgs; {
             inherit headscale;
+            inherit headscale-docker;
+
           };
           defaultPackage = pkgs.headscale;
 
@@ -101,5 +113,6 @@
           };
           defaultApp = apps.headscale;
 
+
         });
 }