I am using this RedHat’s Artemis image.

I have a docker-compose.yml file to run this Artemis container & I try to mount my local ./artemis/broker.xml to replace the container default one:

version: "3"
services:
  artemis:
    image: quay.io/artemiscloud/activemq-artemis-broker
    user: "root"
    environment:
      AMQ_USER: admin
      AMQ_PASSWORD: admin
      AMQ_EXTRA_ARGS: "--relax-jolokia"
      AMQ_RESET_CONFIG: true
    volumes:
      - ./artemis/broker.xml:/home/jboss/broker/etc/broker.xml
    ports:
      - "5672:5672"
      - "61616:61616"
      - "8161:8161"
    networks:
      - backend
...
networks:
  backend:
    driver: bridge

As you can see above, I am mounting the local ./artemis/broker.xml to the container path where its default broker.xml is located. My local directory structure is like this:

docker-compose.yml
artemis/
   - broker.xml

I am also using a root user & have the AMQ_RESET_CONFIG: true environment variable for the Artemis container.

In my local ./artemis/broker.xml, the value that differs from the container’s default broker.xml is this line:

<max-disk-usage>100</max-disk-usage>

The Artemis’ container by default has the value 90. That’s

<max-disk-usage>90</max-disk-usage>

When I run the container by command docker-compose up --build -d. The Artemis container is up & running successfully.

But I notice that my local broker.xml is updated by the container & the value 100 is changed to 90 in my local broker.xml.

I mean I expected the broker.xml inside the container should be changed but it behaves completely the other way around that the container changes my local broker.xml after it is up and running.

Why it behaves like that? How can I have my Artemis container mount my local ./artemis/broker.xml to replace the container’s default one?