How docker container use the local timezone from linux local host

Currently I am setting up a docker swarm on my environment. However i need to configure the container timezone one-by-one. I know there is a option “-v /etc/localtime:/etc/localtime:ro” be used during the docker container creation in order to specify container to use the local timezone. However, the value “-v” cannot be used under docker service creation. Does any other way to configure container to use the timezone from local host on docker swarm?

The OS version is RHEL 7.