Hi! Im new to self hosting. Currently i am running a Jellyfin server on an old laptop. I am very curious to host other things in the future like immich or other services. I see a lot of mention of a program called docker.
search this on The internet I am still Not very clear what it does.
Could someone explain this to me like im stupid? What does it do and why would I need it?
Also what are other services that might be interesting to self host in The future?
Many thanks!
EDIT: Wow! thanks for all the detailed and super quick replies! I've been reading all the comments here and am concluding that (even though I am currently running only one service) it might be interesting to start using Docker to run all (future) services seperately on the server!
So instead of having problems getting the fucking program to run, you have problems getting docker to properly build/run when you need it to.
At work, I have one program that fails to build an image because of a 3rd party package who forgot to update their pgp signature; one that builds and runs, but for some reason gives a 404 error when I try to access it on localhost; one that whoever the fuck made it literally never ran it, because the
Dockerfilewas missing some 7 packages in the apt install line.