Description
When running using the docker image the JVM heap settings are 512MB and requires a change to the bootstrap.conf file.
There are a number of ENV vars used as present to update properties in the nifi.properties and nifi-cli.nifi.properties.
Requesting a minor amendment to allow the java.arg.2 and java.arg.3 to be configurable in a similar fashion using the ENV vars NIFI_JVM_HEAP_INIT and NIFI_JVM_HEAP_MAX.
I have a PR ready to submit for consideration.