[Feature Request] Podman support

[deadmeu]

I tried to start this with podman compose up and got several errors like the following:

Error: short-name "nilsherzig/llocalsearch-backend:latest" did not resolve to an alias and no unqualified-search registries are defined in "/etc/containers/registries.conf"

I think this can be resolved by explicitly including the host in the container URLs?

I know you're using docker, but it would be nice if podman was supported as well.