Initial commit

.gitignore

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+result

README.md

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+# 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.
+

default.nix

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+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
+      ];
+    };
+  }