Created database initialization script following the core stack pattern.
The script automatically creates required databases on first initialization:
- openwebui: Open WebUI application database
- litellm: LiteLLM proxy database for API key management and tracking
Changes:
- Created ai/postgres/init/01-init-databases.sh
- Mounted init directory in ai_postgres service
- Added automatic privilege grants to AI_DB_USER
Note: Init script only runs on first database creation when volume is empty.
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Co-Authored-By: Claude <noreply@anthropic.com>