Maybe you should add OTLP support? I don’t know how you are ingesting from Fluentbit at the moment, but I think with OTLP basically any log source can be integrated either through the fluentbit OTLP plugin or an OTEL collector.

Just a thought: It should be possible to save the default ps output does that not fit your use case better?

man 5 docker-config-json

https://man.archlinux.org/man/extra/docker/docker-config-json.5.en

Boot a live Linux, chroot into your system, run pacman again and fix your systemd boot to include a fallback option for the next time this happens.