used a bash script and a cron job for a long time, now the whole topic is one of the projects i regularly rewrite whenever I want to get my hands dirty with a new programming language or framework.

you can define a retention time for sources (=channels) so you can somewhat limit storage usage.

in a docker compose file you can set the option “restart: unless-stopped”

https://docs.docker.com/reference/compose-file/services/#restart