Allow stubbing ADP client log directory with (and without-) Docker Compose

docker-compose.with-adp-messaging.yml

version: "3.5"
services:
  with-adp-messaging:
    image: cmd.cat/grep
    command: sh -c "mount|egrep --color=always 'adp-messaging|^'"
    volumes:
      # THIS IS THE IMPORTANT LINE - defaults to /var/log/adp-messaging when env is undefined
      - ${ADP_MESSAGING_LOG_DIR:-/var/log/adp-messaging}:/var/log/adp-messaging

override-adp-client-log-dir.sh

# Ref:
#  https://confluence.agodadev.io/display/ADPMES/Changing+JVM+Messaging+Client+Configurations
export ADP_MESSAGING_LOG_DIR=/tmp

# or if you need to be more fancy:
export ADP_MESSAGING_LOG_DIR=$(mktemp -d)

# yay, I can now also start sbt run / sbt test on my dev machine without having to sudo mkdir chmod chown anything.