diff --git a/docs/configuration/backends/docker.md b/docs/configuration/backends/docker.md
index 28a4f57c9..8c81e553f 100644
--- a/docs/configuration/backends/docker.md
+++ b/docs/configuration/backends/docker.md
@@ -218,7 +218,7 @@ Labels can be used on containers to override default behavior.
 | `traefik.backend.loadbalancer.swarm=true`                  | Use Swarm's inbuilt load balancer (only relevant under Swarm Mode).                                                                                                                                                       |
 | `traefik.backend.maxconn.amount=10`                        | Set a maximum number of connections to the backend.<br>Must be used in conjunction with the below label to take effect.                                                                                                   |
 | `traefik.backend.maxconn.extractorfunc=client.ip`          | Set the function to be used against the request to determine what to limit maximum connections to the backend by.<br>Must be used in conjunction with the above label to take effect.                                     |
-| `traefik.frontend.auth.basic=EXPR`                         | Sets basic authentication for that frontend in CSV format: `User:Hash,User:Hash`                                                                                                                                          |
+| `traefik.frontend.auth.basic=EXPR`                         | Sets basic authentication for that frontend in CSV format: `User:Hash,User:Hash` [2]                                                                                                                                      |
 | `traefik.frontend.entryPoints=http,https`                  | Assign this frontend to entry points `http` and `https`.<br>Overrides `defaultEntryPoints`                                                                                                                                |
 | `traefik.frontend.errors.<name>.backend=NAME`              | See [custom error pages](/configuration/commons/#custom-error-pages) section.                                                                                                                                             |
 | `traefik.frontend.errors.<name>.query=PATH`                | See [custom error pages](/configuration/commons/#custom-error-pages) section.                                                                                                                                             |
@@ -243,6 +243,10 @@ If a container is linked to several networks, be sure to set the proper network
 For instance when deploying docker `stack` from compose files, the compose defined networks will be prefixed with the `stack` name.
 Or if your service references external network use it's name instead.
 
+[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.
+
 #### Custom Headers
 
 | Label                                                 | Description                                                                                                                                                                         |