Values set for erlang VM arguments using env variable is not considered

[iam-nagarajan]

I've set the Erlang process limit using the following environment variable

DOCKER_VERNEMQ_ERLANG__PROCESS_LIMIT: "512000" while vernemq/vernemq:1.12.3 image.

When I checked the running process inside the container, the value for "+P" is set as 25600.

/vernemq/bin/../erts-11.2.1/bin/beam.smp -P 256000 -A 64 -K true -W w -zdbbl 32768 -- -root /vernemq/bin/.. -progname vernemq -- -home /vernemq -- -boot /vernemq/bin/../releases/1.12.3/vernemq -config /vernemq/data/generated.configs/app.2021.12.06.11.07.56.config -setcookie vmq -name VerneMQ@172.25.0.2 -smp enable -- -vm_args /vernemq/bin/../etc/vm.args -pa /vernemq/bin/../lib/erlio-patches -- console -noshell -noshell -noinput --

The updated value is shown under vm.args file in generated config, but there is a vm.args file under /vernemq/etc/ directory and it doesn't have the updated value.

As per documentation, having vm.args file in the same directory of vernemq.conf will override any Erlang specific parameters your might have configured via the vernemq.conf.