Podman in OpenWRT 21.02 does not work on Omnia. Do not know it it works on other device, but I fill this BUG report on OpenWRT without any useful reply podman: panic: runtime error: invalid memory address or nil pointer dereference · Issue #20250 · openwrt/packages · GitHub
I belive Turris team have working build environment and will be able try build 3.4.4 version by simply changing version in Makefile. For me it’s hard to set up whole build environment.
Thx Petr.