action: manual
reason: Major version 3.0 changes the Docker volume mount path from /app/data to /data and requires a new environment variable for the database connection. Admin must update docker-compose.yaml before upgrading.
---
> [!WARNING]
> Major version update with breaking changes. Please read the migration guide before upgrading.

Migration Guide: https://github.com/louislam/uptime-kuma/wiki/Migration-From-v2-To-v3

### Breaking changes

- The data directory inside the container has changed from `/app/data` to `/data`. Update your docker-compose volume mounts accordingly.
- A new required environment variable `DATABASE_URL` must be set for the database connection. The old embedded SQLite configuration is no longer the default.
- The notification template engine has been replaced. Custom notification templates must be rewritten using the new syntax.
- The API authentication has changed from basic auth to token-based auth. API integrations must be updated.