Yesterday, I found Singularity(https://sylabs.io/guides/3.7/user-guide/quick_start.html#install),
It's awesome, I think it's far easier to use than docker.(especially its sanbox feature, it's very convenient for finding package changes)

And what surprised me even more is that bargeOS has integrated Singularity many years ago.(pkg install singularity)

But the version is too old(2.6.0), do you have time to upgrade the Singularity?