Addresses user deployment issues:
1. PostgreSQL database tables not being created automatically
2. Authentication issues when using multiple admin usernames
Documentation improvements:
- Added comprehensive troubleshooting sections for PostgreSQL database initialization
- Clarified that only the first username in ADMIN_USERNAMES is auto-created during initialization
- Documented that additional admin usernames must self-register or be created manually
- Added step-by-step solutions for both issues
Code improvements:
- Fixed whitespace handling in ADMIN_USERNAMES parsing (strip whitespace from all usernames)
- Fixed whitespace handling in all database initialization scripts to properly strip the first admin username
- Ensured consistent behavior across all initialization paths
Files updated:
- All Docker setup documentation files
- Configuration documentation
- README and env.example
- Database initialization scripts
- Config parsing logic
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