Add note about required let's encrypt port

Let's Encrypt uses tls-sni to validate the certificate
on the standard https port 443. If the registry is
outwardly listening on a different port Let's Encrypt
will not issue a certificate.

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
This commit is contained in:
Derek McGowan 2016-09-01 15:11:44 -07:00
parent 4107cdb633
commit 279c02a3ce
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@ -1066,6 +1066,11 @@ and proxy connections to the registry server.
The `letsencrypt` struct within `tls` is **optional**. Use this to configure TLS
certificates provided by [Let's Encrypt](https://letsencrypt.org/how-it-works/).
>**NOTE**: When using Let's Encrypt ensure that the outward facing address is
> accessible on port `443`. The registry defaults to listening on `5000`, if
> run as a container consider adding the flag `-p 443:5000` to the `docker run`
> command or similar setting in cloud configuration.
<table>
<tr>
<th>Parameter</th>