# Nginx / letsencrypt / docker -- Ubuntu 16.04

**URL:** <https://meta.discourse.org/t/nginx-letsencrypt-docker-ubuntu-16-04/77926>\
**Category:** Self-hosting\
**Created:** [January 13, 2018, 10:11am UTC](https://meta.discourse.org/t/nginx-letsencrypt-docker-ubuntu-16-04/77926 "2018-01-13T10:11:14Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![itsbhanusharma](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/itsbhanusharma/32/180717_2.png) [@itsbhanusharma](https://meta.discourse.org/u/itsbhanusharma)\
**Post date:** [January 13, 2018, 1:07pm UTC](https://meta.discourse.org/t/nginx-letsencrypt-docker-ubuntu-16-04/77926/5 "2018-01-13T13:07:11Z")

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Docker isn’t running because Your nginx has occupied Port 443 for SSL!

You need to use websockets instead of proxy redirect.

Take some cues from Here: [Add an offline page to display when Discourse is rebuilding or starting up](https://meta.discourse.org/t/adding-an-offline-page-when-rebuilding/45238)

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