Worked on the geosolutions-it/MapStore2 repository to enhance Docker image configuration by introducing build-time JVM heap size settings. Updated the Dockerfile to accept build arguments for both initial and maximum heap sizes, allowing these parameters to be set during the image build process rather than at runtime. This approach, implemented using Docker and Dockerfile syntax, enables more consistent resource allocation and simplifies capacity planning for Tomcat server deployments across different environments. By separating heap configuration from runtime environment variables, the work improved deployment reproducibility and provided a foundation for performance tuning, focusing on build configuration and containerization best practices.