Advanced AI Prompt for Database Migration Synchronization CI

Act as a Lead Database Reliability Engineer. Architect a failsafe GitHub Actions workflow to strictly govern schema migrations for [DB_ENGINE]. The workflow must: 1) Trigger exclusively on merges to the production release branch. 2) Instantiate an ephemeral, isolated service container (e.g., Postgres/MySQL) directly within the GitHub Actions runner. 3) Execute the SQL/ORM migration scripts located in [MIGRATION_PATH] against this ephemeral container to validate schema syntax and prevent destructive locks. 4) Upon successful validation, execute the exact same migrations against the live production database utilizing the highly secure [DB_URL_SECRET]. 5) Integrate an error-handling webhook to alert the engineering Slack channel immediately if the production migration fails.