As far as I know, it's a good practice to use containers from Dockerhub instead of making my own ones. Most of those contain docker-entrypoint.sh
script that is executed on startup. However, sometimes I need to do something on startup in addition to what is already described in docker-entrypoint.sh
. Namely, I'm setting up a RabbitMQ container, I want to use a bind mount to save configs, but the config directory has to be owned by rabbitmq
user. I wish I could execute chown -R rabbitmq /etc/rabbitmq
on startup in addition to docker-entrypoint.sh
, but I don't know how to do that.
I understand that I can simply clone the repo with Dockerfile and entrypoint from git, add something to the entrypoint and build docker image manually, but it looks like a crutch. I can also just attach to the container and execute that command manually which also looks like a crutch.