ENTRADA can be memory hungry, especially when bulk processing large pcap-files. The default memory setting for the ENTRADA Java process (inside the docker container) is 4GB. However if you run into out-of-memory exceptions, the amount of memory used can increased using the JAVA_OPTS variable in the compose script.
When the Docker host is running out of memory then Docker kills the container that is using the most memory. This probably will be the ENTRADA container and the result is an OutOfMemoryException. If this happens, add more memory for the Docker host to use.
ENTRADA executes multiple workflows and operations simultaneously, it is advisable to have at least 4 CPU-cores available on the (virtual) system running ENTRADA.