Allow to use TYPO3 documentation rendering on both systems

I use docker on hikari2 and podman on hikari.
I now change the bash script based on that.

home.nix

@@ -32,7 +32,7 @@ in {
     stateVersion = "22.05";
 
     packages = import ./home/packages.nix {
-      inherit pkgs;
+      inherit pkgs ownLib;
     };
 
     file = import ./home/files.nix { };

home/packages.nix

@@ -1,4 +1,4 @@
-{ pkgs }:
+{ pkgs, ownLib }:
 
 with pkgs; [
   nix
@@ -20,7 +20,9 @@ with pkgs; [
   (callPackage ./packages/custom/backup { })
   (callPackage ./packages/custom/nextcloud-sync/from-local.nix { })
   (callPackage ./packages/custom/nextcloud-sync/from-remote.nix { })
-  (callPackage ./packages/custom/typo3-documentation-rendering { })
+  (callPackage ./packages/custom/typo3-documentation-rendering {
+    inherit ownLib;
+  })
   (callPackage ./packages/custom/build-phpactor { })
   i3blocks
   st

home/packages/custom/typo3-documentation-rendering/default.nix

@@ -1,22 +1,27 @@
 {
   writeShellApplication,
+  ownLib,
   podman
 }:
 
-writeShellApplication {
+let
+  usePodman = ownLib.onHikari {};
+  runner = if usePodman then "podman" else "docker";
+  image = (if usePodman then "podman" else "") + "t3docs/render-documentation:latest";
+  runtimeInputs = if usePodman then [ podman ] else [ ];
+
+in writeShellApplication {
   name = "custom-typo3-render-documentation";
 
-  runtimeInputs = [
-    podman
-  ];
+  inherit runtimeInputs;
 
   # See: https://t3docs.github.io/DRC-The-Docker-Rendering-Container/07-To-be-sorted/quickstart.html#build-html-with-plain-docker-commands
   text = ''
-    podman \
+    ${runner} \
       run --rm \
       -v "$(pwd)":/PROJECT:ro \
       -v "$(pwd)/Documentation-GENERATED-temp":/RESULT \
-      docker.io/t3docs/render-documentation:latest \
+      ${image} \
       makehtml
   '';
 }