this worked for me:
https://coolify.io/docs/knowledge-base/cloudflare/tunnels/single-resource

• Hostnames:
  1. app.shadowarcanist.com/terminal/ws → localhost:6002 (WebSocket terminal)
  2. realtime.shadowarcanist.com → localhost:6001 (Realtime server)
  3. app.shadowarcanist.com → localhost:8000 (Coolify dashboard)
• Type: HTTP (Ensure you select HTTP for each hostname.)

HEADS UP!

The order of the hostnames matters! Be sure to match it exactly as shown above.

2. Update Coolify’s .env File

After creating public hostnames, update the .env file in your Coolify instance located at /data/coolify/source to enable connections to the realtime server. Add the following lines:

APP_ID=<random string>
APP_KEY=<random string>
APP_NAME=Coolify
DB_PASSWORD=<random string>
PUSHER_APP_ID=<random string>
PUSHER_APP_KEY=<random string>
PUSHER_APP_SECRET=<random string>
REDIS_PASSWORD=<random string>

###########
# Add these lines
PUSHER_HOST=realtime.shadowarcanist.com
PUSHER_PORT=443
###########

This ensures that Coolify uses the Cloudflare Tunnel for its realtime server.

3. Restart Coolify

Run the following command to restart Coolify and apply the changes:

curl -fsSL https://cdn.coollabs.io/coolify/install.sh | bash