start.sh

#!/bin/bash

# Start MongoDB as mongodb user
mongod --replSet rs0 --bind_ip_all --dbpath /data/db &

# Wait for MongoDB to start
sleep 10

# Initialize replica set
mongosh --eval "rs.initiate({_id: 'rs0', members: [{_id: 0, host: 'localhost:27017'}]})"

# Switch to rocketchat user and start the application
su - rocketchat -c "cd /app/bundle && node main.js"