Worked on the FlexMeasures/flexmeasures repository to deliver local PostgreSQL data persistence within Docker Compose, enhancing both developer experience and data safety in local environments. The solution involved mounting a local directory for PostgreSQL data, ensuring that information remains intact across container restarts and reducing the risk of accidental data loss. This update aligned with ongoing efforts to optimize Docker and database workflows. The implementation required updates to configuration files using YAML, adjustments to .gitignore to exclude the new data directory, and refinements to documentation written in reStructuredText, providing clear guidance for future contributors and maintaining reproducibility in development setups.