Affects: Coolify

From inside a Docker container, the correct IP to reach the host machine is the Docker network gateway, not the server's LAN IP or host.docker.internal.

For the cafe stack:

• ✅ Correct: 172.18.0.1 (Docker network gateway)
• ❌ Wrong: 192.168.1.65 (LAN IP — SSH connects but Coolify validation fails)
• ❌ Wrong: host.docker.internal (not reliably available on all Docker setups)

docker network inspect cafe_cafe_net | grep Gateway

docker exec coolify-db psql -U coolify -d coolify \
  -c "UPDATE servers SET ip = '172.18.0.1' WHERE name = 'localhost';"

• Homelab Troubleshooting Index

• Coolify SSH Key Setup
• Coolify
• Return to wiki home