Merge #2829

2829: update docs r=mergify[bot] a=nextgens

## What type of PR?

documentation

## What does this PR do?

Update the documentation:
 - debian Stretch -> debian stable (see #2826)
 - docker 24.0.0 is broken (see #2827)
 - document how to get rid of "mount: Deactivated successfully" messages from moby (see #2797)

### Related issue(s)
- closes #2826
- closes #2827 
- closes #2797

## Prerequisites
Before we can consider review and merge, please make sure the following list is done and checked.
If an entry in not applicable, you can check it or remove it from the list.

- [ ] In case of feature or enhancement: documentation updated accordingly
- [x] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/workflow.html#changelog) entry file.


Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>

docs/compose/requirements.rst

@@ -26,11 +26,11 @@ Pick a distribution
 The mail server runs as a set of Docker containers, so it is almost operating
 system agnostic.
 
-Because most of our tests run on Debian Jessie and Debian Stretch, we recommend
+Because most of our tests run on Debian stable, we recommend
 one of these for the base system. Mailu should however be able to run on
 any of the `officially supported distributions`_.
 
-For the purpose of this guide, all examples are based on Debian Stretch. The
+For the purpose of this guide, all examples are based on Debian stable. The
 differences with other system will however hardly be noticeable.
 
 .. _`officially supported distributions`: https://docs.docker.com/engine/installation/
@@ -38,7 +38,7 @@ differences with other system will however hardly be noticeable.
 Install the distribution
 ------------------------
 
-First, install Debian Stretch from the *netinstall* CD image. When installing,
+First, install Debian stable from the *netinstall* CD image. When installing,
 make sure that you either:
 
  - setup a root *ext4* partition,

docs/faq.rst

@@ -895,3 +895,19 @@ If not, you can download the `aspell dictionary`_ you require and place it in ``
    $config['spellcheck_languages'] = array('en'=>'English', ...);
 
 .. _`aspell dictionary`: http://ftp.gnu.org/gnu/aspell/dict/0index.html
+
+
+I see a lot of "mount: Deactivated successfully." messages in the logs
+``````````````````````````````````````````````````````````````````````
+
+This is a docker & systemd issue: see `this workaround`_
+
+.. _`this workaround`: https://stackoverflow.com/questions/63622619/docker-flooding-syslog-with-run-docker-runtime-logs/69415949#69415949
+
+
+I see a lot of "Unable to lookup the TLSA record for XXX. Is the DNSSEC zone okay on ..." messages in the logs
+``````````````````````````````````````````````````````````````````````````````````````````````````````````````
+
+There may be multiple causes for it but if you are running docker 24.0.0, odds are you are `experiencing this docker bug`_ and the workaround is to switch to a different version of docker.
+
+.. _`experiencing this docker bug`: https://github.com/Mailu/Mailu/issues/2827

towncrier/newsfragments/2829.misc

@@ -0,0 +1,4 @@
+Update the documentation:
+ - debian Stretch -> debian stable (see #2826)
+ - docker 24.0.0 is broken (see #2827)
+ - document how to get rid of "mount: Deactivated successfully" messages from moby (see #2797)