I tried to follow the instructions at https://github.com/DeterminateSystems/nix-installer/tree/main#in-a-container to build a container with systemd but I get

➜ podman build .
STEP 1/7: FROM ubuntu:latest
STEP 2/7: RUN apt update -y
--> Using cache 06f988deb7883140e1c3fd5141d3a23eda7bbd802ce2a4d810f734e0c3efe25c
--> 06f988deb788
STEP 3/7: RUN apt install curl systemd -y
--> Using cache 620846a7e0624e2d571b9c6e15d30a661b7f999fd3e88380bddd5d41c6e24013
--> 620846a7e062
STEP 4/7: RUN curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | sh -s -- install linux   --extra-conf "sandbox = false"   --no-start-daemon   --no-confirm
info: downloading installer (https://install.determinate.systems/nix/tag/v0.15.1/nix-installer-x86_64-linux)
Error: 
   0: Planner error
   1: Error executing action
   2: Action `configure_init_service` errored
   3: Could not detect systemd; you may be able to get up and running without systemd with `nix-installer install linux --init none`.