Docker inspect format retrieve port mapping -

i'd retrieve port mapped container using docker inspect, found that:

docker inspect --format=" {{ .networksettings.ports }} " containerid

output:

map[1234/tcp:[map[hostip:0.0.0.0 hostport:49159]] 3306/tcp:<nil> 4444/tcp:<nil> 4567/tcp:<nil> 4568/tcp:<nil>]

but i'd have output this:

1234/tcp:49159

is possible ?

see answer how env variable when doing docker inspect guess can adapt , directly want

Script