Why doesn't regex replacement work with sed?

Question

linux

Here is the minion file:

# clusters. #id:
# clusters. #id: dfggggg
#id:
#id: dfsfff
id:
id: rrrrpp

It is necessary that the last 4 lines change.
Here is the replacement:

sed -i "s/^\#?id:.*/id: zabbix-proxy.client.local/gm" minion

Does not work.
PS The file is in the home directory, I check it by root I checked
this regular expression in regexr.com and https://regex101.com/ it works there

Answer 1

you need to escape not a lattice, but a question mark
's/^#\?id:.*/id: zabbix-proxy.client.local/'