Need to understand the concept of bringing up the containers

Docker
#1

Hi i am usingf podman-containers and containers are going down after every server reboot
How to configure and explain me the concept

#2

Use the --restart option:
Start containers automatically | Docker Docs

#3

Hi al1, how in case of 10 to 15 containers and may i know it how to do it with systemctl container.service

#4

You can use this:
podman-generate-systemd — Podman documentation

But it is deprecated. The page has details on what else to use.