Add DOCKER_NORELOAD to compose settings

[ericholscher]

This stops containers from auto-reloading.

[humitos]

Looks good to me. I haven't tested but it follow the same idea as the INIT variable.

My feedback on this would be to split DOCKER_NO_RELOAD into DJANGO_NO_RELOAD and CELERY_NO_RELOAD. I think that most of us will benefit of using CELERY_NO_RELOAD but maybe not from DJANGO_NO_RELOAD: there is no need to reload celery when working on serving docs stuff --which I think is the most common case.

It could also be a third argument called just --no-reload that enables both as a shortcut: celery and django.

Besides, if you think that this is not needed, I would call the variable just NO_RELOAD since the DOCKER_ part does not add meaning.

[ericholscher]

I think the DOCKER is because it's for docker-compose. I think it's useful to prefix it, could also do RTD_NO_RELOAD but I think this is fine for now.

[ericholscher]

I think this works for me for now, as it saves my CPU from burning up, we can make it cleaner as we go. 👍