Add frontend auth support

[yamalight]

Traefik 1.7 introduced auth support for front-ends.
It can be achieved by using the following label:

# Sets basic authentication for that frontend in CSV format: User:Hash,User:Hash [2]
traefik.frontend.auth.basic=EXPR

[2] traefik.frontend.auth.basic=EXPR: To create user:password pair, it's possible to use this command echo $(htpasswd -nb user password) | sed -e s/\\$/\\$\\$/g. The result will be user:$$apr1$$9Cv/OMGj$$ZomWQzuQbL.3TRCS81A1g/, note additional symbol $ makes escaping.

We should add support for this in config file.

[uLan08]

Hi, I would like to take this on!

[yamalight]

@uLan08 awesome, thanks! it's all yours! 😄

[uLan08]

Hey @yamalight , Do I need to update code in the server repo?

[yamalight]

@uLan08 you'd actually need to work a bit with both.
here's the outline of what needs to be done:

1. Add auth field support to exoframe config method in cli
2. Read auth field from config on server and when needed add corresponding labels during deployment (here and here) in server
3. Document that in config docs

[uLan08]

I see... So it should be a new field and should not be under labels right?

[uLan08]

Btw, I just saw that it's under a new format.

traefik.frontend.auth.basic.users=EXPR | Sets the basic authentication to this frontend in CSV format: User:Hash,User:Hash [2]

https://docs.traefik.io/configuration/backends/docker/#on-containers

[yamalight]

@uLan08 yep, the idea is to give exoframe users a very simple way of doing it.
Nice catch on the format change! 👍