github.com/containers/podman/v5@v5.1.0-rc1/docs/source/markdown/options/expose.md (about)

     1  ####> This option file is used in:
     2  ####>   podman create, run
     3  ####> If file is edited, make sure the changes
     4  ####> are applicable to all of those.
     5  #### **--expose**=*port[/protocol]*
     6  
     7  Expose a port or a range of ports (e.g. **--expose=3300-3310**).
     8  The protocol can be `tcp`, `udp` or `sctp` and if not given `tcp` is assumed.
     9  This option matches the EXPOSE instruction for image builds and has no effect on
    10  the actual networking rules unless **-P/--publish-all** is used to forward to all
    11  exposed ports from random host ports. To forward specific ports from the host
    12  into the container use the **-p/--publish** option instead.