feature request: docker secrets support

[iAnanich]

I'm using mher/flower Docker image for my Docker Swarm stack, and it could be great to have auth related settings, like FLOWER_BASIC_AUTH to be configurable from file. That will allow usage of Docker Secrets.

Docker documentation recommends adding to image env vars which hold path to files which contain actual values. SO, for example, I could store basic auth value in flower_basic-auth Docker secret, so it will be available for container from /run/secrets/flower_basic-auth file, and to let Flower know where to look for basic auth, I will provide container with FLOWER_BASIC_AUTH_FILE env var holding /run/secrets/flower_basic-auth value.

It could be great to have similar features for other security-related settings, such as SSL certificate and other auth methods.

[aalemanq]

nothing about this?