# (Re)Installing Discourse with Docker on CentOS 7

**URL:** <https://meta.discourse.org/t/re-installing-discourse-with-docker-on-centos-7/65359>\
**Category:** Self-hosting\
**Created:** [2017 年 6 月 29 日午後 8:17 UTC](https://meta.discourse.org/t/re-installing-discourse-with-docker-on-centos-7/65359 "2017-06-29T20:17:07Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![elijah](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/elijah/32/104055_2.png) [@elijah](https://meta.discourse.org/u/elijah)\
**Post date:** [2017 年 6 月 29 日午後 8:34 UTC](https://meta.discourse.org/t/re-installing-discourse-with-docker-on-centos-7/65359/2 "2017-06-29T20:34:05Z")

</div>

The output from `which` doesn’t look like an issue, that’s just the launcher looking for the right name to use for `docker`, but lines 2, 3, and 4 of that look like trouble.

```plaintext
flag provided but not defined: --format
See 'docker info --help'.
stat: cannot read file system information for ‘/var/lib/docker/aufs’: No such file or directory

```

The version of docker found doesn’t seem to be the one launcher expects. AND you don’t seem to have aufs, which is needed for a working Discourse install.

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_[View the full topic](https://meta.discourse.org/t/re-installing-discourse-with-docker-on-centos-7/65359)._