a container is a running instance of a container image
a container image is a single file (tar) loaded with metadata anf has all files needed by your application
it also has an entry point (in metadata) this is the command needed to start container)
Manage Container Storage and Network Resources
you can also add network containers for example to create a network called frontend do
[student@servera ~]$ podman network create --subnet 10.89.1.0/24 \ --gateway 10.89.1.1 frontend