To avoid error message:

user@server ~ % /etc/init.d/k3s status
/lib/rc/sh/openrc-run.sh: 28: /etc/init.d/k3s: source: not found
/lib/rc/sh/openrc-run.sh: 29: /etc/init.d/k3s: source: not found
 * status: stopped

I've replaced `source` with `sourcex`, defined in https://github.com/OpenRC/openrc/blob/master/sh/openrc-run.sh.in#L30
Classic shell `.` also works.
Tested in Devuan 5 Daedalus (based on Debian 12 bookworm / testing), package `openrc` version 0.45.2-2.
Signed-off-by: Alexey Vazhnov <vazhnov@boot-keys.org>