Setup mongodb replica set with docker-compose

docker-compose.yml

version: '3.1'

services:
  mongo-setup:
    container_name: mongo-setup
    image: mongo
    restart: on-failure
    networks:
      default:
    volumes:
      - ./scripts:/scripts
    entrypoint: [ "/scripts/setup.sh" ]
    depends_on:
      - mongo1
      - mongo2
      - mongo3

  mongo1:
    hostname: mongo1
    container_name: mongo1
    image: mongo
    expose:
      - 27017
    ports:
      - 27017:27017
    networks:
      default:
    restart: always
    entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0", "--journal", "--dbpath", "/data/db", "--enableMajorityReadConcern", "false" ]
    volumes:
      - mongodata1:/data/db
      - mongodatacfg1:/data/configdb

  mongo2:
    hostname: mongo2
    container_name: mongo2
    image: mongo
    expose:
      - 27018
    ports:
      - 27018:27018
    networks:
      default:
    restart: always
    entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0", "--journal", "--dbpath", "/data/db", "--enableMajorityReadConcern", "false", "--port", "27018" ]
    volumes:
      - mongodata2:/data/db
      - mongodatacfg2:/data/configdb

  mongo3:
    hostname: mongo3
    container_name: mongo3
    image: mongo
    expose:
      - 27019
    ports:
      - 27019:27019
    networks:
      default:
    restart: always
    entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0", "--journal", "--dbpath", "/data/db", "--enableMajorityReadConcern", "false", "--port", "27019" ]
    volumes:
      - mongodata3:/data/db
      - mongodatacfg3:/data/configdb

volumes:
  mongodata1:
  mongodatacfg1:
  mongodata2:
  mongodatacfg2:
  mongodata3:
  mongodatacfg3:

setup.sh

#!/bin/bash

#MONGODB1=`ping -c 1 mongo1 | head -1  | cut -d "(" -f 2 | cut -d ")" -f 1`
#MONGODB2=`ping -c 1 mongo2 | head -1  | cut -d "(" -f 2 | cut -d ")" -f 1`
#MONGODB3=`ping -c 1 mongo3 | head -1  | cut -d "(" -f 2 | cut -d ")" -f 1`

MONGODB1=mongo1
MONGODB2=mongo2
MONGODB3=mongo3

echo "**********************************************" ${MONGODB1}
echo "Waiting for startup.."
until curl http://${MONGODB1}:27017/serverStatus\?text\=1 2>&1 | grep uptime | head -1; do
  echo '.'
  sleep 1
done

# echo curl http://${MONGODB1}:28017/serverStatus\?text\=1 2>&1 | grep uptime | head -1
# echo "Started.."


echo SETUP.sh time now: `date +"%T" `
mongo --host ${MONGODB1}:27017 <<EOF
var cfg = {
    "_id": "rs0",
    "protocolVersion": 1,
    "version": 1,
    "members": [
        {
            "_id": 0,
            "host": "${MONGODB1}:27017",
            "priority": 2
        },
        {
            "_id": 1,
            "host": "${MONGODB2}:27018",
            "priority": 0
        },
        {
            "_id": 2,
            "host": "${MONGODB3}:27019",
            "priority": 0
        }
    ],settings: {chainingAllowed: true}
};
rs.initiate(cfg, { force: true });
rs.reconfig(cfg, { force: true });
rs.setSlaveOk();
db.getMongo().setReadPref('nearest');
db.getMongo().setSlaveOk();
EOF

@alissonfpmorais: I am using this on macOS Big Sur. I am trying to connect to the replica set using MongoDB Compass but I am getting the following error:

Any possible workaround to solve this? If I don't supply the replica set rs0, I am able to connect to Primary database on 27017.