Done.
https://github.com/davmac314/dinit/issues/274
Termux:Boot + Dinit now mean I can launch things on boot - I currently use that with sshd. 😉
Next: Start a strfry on my phone and wire it up with tor - then replicate this on my old phone that's just collecting dust in a corner and thus have my own fully portable nostr relay in the Tor and perhaps even I2P network. If people can drop wallets with half LN nodes (Zeus' on-device thing) on their phones, then you can be your very own Nostr Service Provider ;)