docker-entrypoint.sh attempts to overwrite my config file

[streamliner18]

I'm trying to create my own rabbitmq Dockerfile with custom configurations and definitions baked in the container. (COPY'ed directly into /etc/rabbitmq/rabbitmq.config) When I start the container, it gives me this:

/usr/local/bin/docker-entrypoint.sh: line 386: /etc/rabbitmq/rabbitmq.config: Permission denied.

I then tried to add RUN chmod 777 /etc/rabbitmq/rabbitmq.config to my Dockerfile, it did run. However, it simply overwrote my rabbitmq.config with the default one, and non of my settings were properly applied.

Reproduced on 17.06.2-ce and rabbitmq:3.6.11, both on a macOS 10.12 and a Ubuntu 16.04 box. I verified the overwrite by manually attaching bash into the container and cat-ing the config.

Here's my Dockerfile:

FROM rabbitmq:3.6.11

MAINTAINER Project Wyze Team

COPY rabbitmq_message_timestamp.ez /usr/lib/rabbitmq/lib/rabbitmq_server-3.6.11/plugins/

COPY rabbitmq.config /etc/rabbitmq/
COPY definitions.json /etc/rabbitmq/

RUN chmod +r /etc/rabbitmq/rabbitmq.config

RUN rabbitmq-plugins enable --offline rabbitmq_management
RUN rabbitmq-plugins enable --offline rabbitmq_mqtt
RUN rabbitmq-plugins enable --offline rabbitmq_message_timestamp

ENV RABBITMQ_HIPE_COMPILE 1

EXPOSE 15672
EXPOSE 1883

And here's my section of docker-compose:

services:
    rabbit:
        build: ./rabbit-mqtt
        ports:
            - "15672:15672"
            - "5672:5672"
            - "1883:1883"

[yosifkit]

I think this comment is partly applicable. Basically, you should set the hipe_compile option in your config file and remove the ENV, and then the entrypoint script will no longer try to overwrite your config.

[streamliner18]

@yosifkit Bingo! Thanks man, that's exactly the problem! Actually it would be great if this behavior is properly documented on the docker hub page. I'll try to PR this later.