Improve memory utilization

[RadovanTomik]

By default, the agent in docker uses 379MB memory, and it scales when connected to a BH. The exact numbers need to be specified, improved and documented. SQLite by itself should be pretty minimalistic. Some optimization is needed

[RadovanTomik]

- JAVA_TOOL_OPTIONS=-Xms128m -Xmx256m -XX:MaxMetaspaceSize=256m -XX:MaxDirectMemorySize=64m -XX:+UseContainerSupport -XX:+UseG1GC -XX:MaxGCPauseMillis=200 -XX:+UseStringDeduplication -Djava.awt.headless=true

seems to work fine for limiting the memory usage

[RadovanTomik]

There might be a leak during the report generation operation