From d54fd744b86c35ce41952fc950f4383dc0a7d317 Mon Sep 17 00:00:00 2001
From: Quentin Dufour <quentin@deuxfleurs.fr>
Date: Sun, 24 Jul 2022 14:41:15 +0200
Subject: [PATCH] Initial commit

---
 .gitignore  |  1 +
 README.md   | 17 +++++++++++++++++
 default.nix | 19 +++++++++++++++++++
 3 files changed, 37 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 README.md
 create mode 100644 default.nix

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b2be92b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+result
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e6f52ed
--- /dev/null
+++ b/README.md
@@ -0,0 +1,17 @@
+# A lightweight Nix environment in a docker container
+
+This container is inteded to be used in a CI environment,
+and especially with Drone CI.
+
+Build with:
+
+```
+docker load < $(nix-build)
+```
+
+## Notes
+
+Drone CI hardcodes the shell with `/bin/sh`,
+so whatever the change you make to the container, 
+you must ensure that `/bin/sh` exists and works.
+
diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..519b252
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,19 @@
+let
+  pkgsSrc = fetchTarball {
+    # As of 2022-07-19
+    url = "https://github.com/NixOS/nixpkgs/archive/d2db10786f27619d5519b12b03fb10dc8ca95e59.tar.gz";
+    sha256 = "0s9gigs3ylnq5b94rfcmxvrmmr3kzhs497gksajf638d5bv7zcl5";
+  };
+  pkgs = import pkgsSrc { };
+in
+  pkgs.dockerTools.buildImage {
+    name = "superboum/nixtainer";
+    copyToRoot = pkgs.buildEnv {
+      name = "image-root";
+      pathsToLink = [ "/bin" ];
+      paths = [
+        pkgs.nixStatic
+        pkgs.pkgsStatic.busybox
+      ];
+    };
+  }