For meal planning and shopping lists, grocy os completely overkill.
You could look at Kitchen Owl, it even looks like bring! and you can use meal planning :)
For me everything works fine since years, EXCEPT collabora. I use onlyoffice now, it’s much faster and very stable
I have nextcloud running since nearly 5 years and it never failed once. Only dowtime is when the backup fails and somehow maintenance mode is still enabled (technically not a crash)
For those interested: Running in docker with mariadb in a stack, checking updates with watchtower everyday and pulling from stable, backups with borg(matic)
They don’t anymore? XD
I use the public cloud with the smallest tier with storage to host a django app: https://pflaenz.li
It costs around 4$/month and runs great!
You can look at infomaniak, they host everything in Switzerland and use 100% green energy. They also build on open source standards in a lot of places.
But in the end, servers are power hungry and need a lot of rare earths, other minarals and large amounts of energy to be produced.
I have a Synology NAS at my parents place and I backup there every night with borg
Docker is super easy. But the app itself has its quirks. If you only want shopping/planning, I think there are more suitable apps.
I started using it mostly for tracking stuff in the fridge because too much spoiled because it was hidden somewhere and I forgot about it.
Another thought: I use grocy (or at least try to use it) to have an overview of my stock and know when an open item in the fridge neeeds to be used before spoiling. But I just use a shared note on nextcloud for shopping, which is good enough for two people. But of course there is no meal planning or recipe management