Acknowledgements
https://discuss.linuxcontainers.org/
https://discuss.linuxcontainers.org/t/how-to-run-docker-inside-lxc-container/13017/4
https://discuss.linuxcontainers.org/t/error-seccomp-notify-not-supported-on-container-start/15038/3
https://discuss.linuxcontainers.org/t/how-do-i-assign-a-public-ipv6-address-to-a-lxc-container/6028
https://github.com/turtle0x1/LxdMosaic
https://openzfs.github.io/openzfs-docs/Getting Started/Debian/index.html
https://github.com/SuperManito/LinuxMirrors
Thank @Ella-Alinda @fscarmen for providing guidance.