check_mrpe not working with busybox sed (librenms docker)

[clyso]

when running check_mrpe inside container (busybox sed) I receive following error:

sed: unterminated {

when running on container host (gnu sed) works as expected

[Deleted user]

following change fixed the problem:
instead of
sed '/^<<<mrpe>>>/,/^<<</{//!b};d'
use
sed '/^<<<mrpe>>>/,/^<<</{//!b;};d'

summary: add a semikolon before the closing bracket