MongoDB replicaSet on three different machines - mongodb

Question

I have the following Docker Compose file, and I wish to persist data on three machines (different hostname).
The file as-is works OK, but on the same machine (it creates one primary and two replicas).
My questions:
How can I set the Docker Compose file up in such way that the primary is on hostname primary-1.com and the replicas are on backup-1.com and backup-2.com.
Should this docker-compose run on each hostname?
My docker-compose file:
version: "3.8"
services:
mongo1:
image: mongo:5
container_name: mongo1
command: ["--replSet", "my-replica-set", "--bind_ip_all", "--port", "30001"]
volumes:
- ./data/mongo-1:/data/db
ports:
- 30001:30001
healthcheck:
test: test $$(echo "rs.initiate({_id:'my-replica-set',members:[{_id:0,host:\"mongo1:30001\"},{_id:1,host:\"mongo2:30002\"},{_id:2,host:\"mongo3:30003\"}]}).ok || rs.status().ok" | mongo --port 30001 --quiet) -eq 1
interval: 10s
start_period: 30s
mongo2:
image: mongo:5
container_name: mongo2
command: ["--replSet", "my-replica-set", "--bind_ip_all", "--port", "30002"]
volumes:
- ./data/mongo-2:/data/db
ports:
- 30002:30002
mongo3:
image: mongo:5
container_name: mongo3
command: ["--replSet", "my-replica-set", "--bind_ip_all", "--port", "30003"]
volumes:
- ./data/mongo-3:/data/db
ports:
- 30003:30003