1758: Implement a simpler credential cache (alternative to #1755) r=mergify[bot] a=nextgens
## What type of PR?
Feature: it implements a credential cache to speedup authentication requests.
## What does this PR do?
Credentials are stored in cold-storage using a slow, salted/iterated hash function to prevent offline bruteforce attacks. This creates a performance bottleneck for no valid reason (see the
rationale/long version on https://github.com/Mailu/Mailu/issues/1194#issuecomment-762115549).
The new credential cache makes things fast again.
This is the simpler version of #1755 (with no new dependencies)
### Related issue(s)
- close#1411
- close#1194
- close#1755
## Prerequistes
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.
- [x] 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/guide.html#changelog) entry file.
1776: optimize generation of transport nexthop r=mergify[bot] a=ghostwheel42
## What type of PR?
bug-fix and enhancement.
## What does this PR do?
Possibly there should be more input validation when editing a relay, but for now this tries to make the best out of the existing "smtp" attribute while maintaining backwards compatibility. When relay is empty, the transport's nexthop is the MX of the relayed domain to fix#1588
```
RELAY NEXTHOP TRANSPORT
empty use MX of relay domain smtp:domain
:port use MX of relay domain and use port smtp:domain:port
target resolve A/AAAA of target smtp:[target]
target:port resolve A/AAAA of target and use port smtp:[target]:port
mx:target resolve MX of target smtp:target
mx:target:port resolve MX of target and use port smtp:target:port
lmtp:target resolve A/AAAA of target lmtp:target
lmtp:target:port resolve A/AAAA of target and use port lmtp:target:port
target can also be an IPv4 or IPv6 address (an IPv6 address must be enclosed in []: [2001:DB8::]).
```
When there is proper input validation and existing database entries are migrated this function can be made much shorter again.
### Related issue(s)
- closes#1588
- closes#1815
## Prerequistes
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.
- [x] 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/guide.html#changelog) entry file.
Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>
Co-authored-by: Alexander Graf <ghostwheel42@users.noreply.github.com>
1831: Fix roundcube database env configuration r=mergify[bot] a=parisni
## What type of PR?
bug-fix
## What does this PR do?
Both roundcube and mailu admin website can be backed by postgres/mysql. Before this PR, the `DB_FLAVOR` is shared by both services. However, the other roundcube dedicated DB params are prefixed with `ROUNDCUBE_`. (eg: `ROUNDCUBE_DB_NAME`)
There is no reason to share the DB_FLAVOR for both: This PR makes them be considered independently to make things clear and avoid bugs.
Also, the roundcube_db_flavor and db_flavor are made separated in this PR. However for simplicity, the template generator bind them : roundcube_db_flavor = db_flavor. This makes the template generator UI more simple. I considered most of the time people want to have both roundcube and mailu share the same RDBMS.
Also, AFAIK the internal postgresql service is deprecated and will be removed in 1.9. This is why this PR does not integrate roundcube in postgres when the internal DB is choosen: in case of internal postgres, the roundcube is backed with sqlite.
Both documentation and setup website have been updated accordingly.
### Related issue(s)
- Auto close an issue like: closes#1648#1471
## Prerequistes
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.
- [X] 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/guide.html#changelog) entry file.
Co-authored-by: parisni <nicolas.paris@riseup.net>
Co-authored-by: Nicolas Paris <nicolas.paris@riseup.net>
1694: update compression algorithms for current dovecot r=nextgens a=lub
## What type of PR?
enhancement
## What does this PR do?
This adds additional compression algorithms in accordance with
https://doc.dovecot.org/configuration_manual/zlib_plugin/
### Related issue(s)
## Prerequistes
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.
- [x] 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/guide.html#changelog) entry file.
Co-authored-by: lub <git@lubiland.de>
1806: Reflect override settings for postfix r=mergify[bot] a=ineiti
## What type of PR?
(documentation)
## What does this PR do?
Fixes path in the documentation setting, and also adds how to change postfix.cf
Co-authored-by: Linus Gasser <linus.gasser@epfl.ch>
1649: Update docs/reverse.rst with Traefik v2+ info r=mergify[bot] a=patryk-tech
## What type of PR?
Documentation
## What does this PR do?
Adds information about using Traefik v2+ as a reverse proxy.
### Related issue(s)
Closes#1503
## Prerequistes
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.
- [x] 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/guide.html#changelog) entry file.
1673: Remove rspamd unused env var from start script r=mergify[bot] a=cbachert
## What type of PR?
Cleanup
## What does this PR do?
Remove unused environment variable FRONT_ADDRESS in rspamd. FRONT_ADDRESS references were removed with commit 8172f3e in PR #727 like mentioned in chat https://matrix.to/#/!MINuyJjJSrfowljYCK:tedomum.net/$160401946364NGNmI:imninja.net?via=huisman.xyz&via=matrix.org&via=imninja.net
```
Mailu$ grep -r "FRONT_ADDRESS" core/rspamd/
core/rspamd/start.py:os.environ["FRONT_ADDRESS"] = system.get_host_address_from_environment("FRONT", "front")
```
### Related issue(s)
N/A
## Prerequistes
- [x] Documentation updated accordingly: No documentation to update
- [x] Add to changelog: Minor change
Co-authored-by: Patryk Tech <git@patryk.tech>
Co-authored-by: cbachert <cbachert@users.noreply.github.com>
1718: Warn people off of the documentation's K8s recipe. r=mergify[bot] a=c4lliope
Based on a discussion on Matrix (2020.12.19),
the helm charts are the way to go.
1793: Fix Typo in Dutch Translation r=mergify[bot] a=DjVinnii
## What type of PR?
Enhancement
## What does this PR do?
There were 2 typos in the Dutch translation file. These typos are being fixed with this PR.
### Related issue(s)
- None
Co-authored-by: Grace <30454698+c4lliope@users.noreply.github.com>
Co-authored-by: Vincent Kling <vincentkling@msn.com>
1783: Switch to server-side sessions r=mergify[bot] a=nextgens
## What type of PR?
bug-fix
## What does this PR do?
It simplifies session management.
- it ensures that sessions will eventually expire (*)
- it implements some mitigation against session-fixation attacks
- it switches from client-side to server-side sessions (in Redis)
It doesn't prevent us from (re)-implementing a "remember_me" type of feature if that's considered useful by some.
Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>
- remove PASSWORD_SCHEME altogether
- introduce CREDENTIAL_ROUNDS
- migrate all old hashes to the current format
- auto-detect/enable all hash types that passlib supports
- upgrade passlib to 1.7.4 (see #1706: ldap_salted_sha512 support)
1765: Set sensible cookie flags on the admin app r=mergify[bot] a=nextgens
## What type of PR?
Bugfix
## What does this PR do?
It sets the right flags on the session cookie issued by the admin app.
This should probably be backported as the lack of secure flag on TLS-enabled setup is a high risk vulnerability.
SameSite is hardening / helps against CSRF on modern browsers
HTTPOnly is hardening / helps reduce the impact of XSS
Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>
1711: fix typo in faq.rst r=Diman0 a=tomwojcik
1712: Add details for postfix-overrides r=mergify[bot] a=sholl
## What type of PR?
Documentation clarification
## What does this PR do?
### Related issue(s)
this clarifies the FAQ about overrides and fixes#1628
Co-authored-by: Tomasz Wójcik <tomwojcik@users.noreply.github.com>
Co-authored-by: Stephan Holl <stephan@holl-land.de>
Co-authored-by: Stephan Holl <1610827+sholl@users.noreply.github.com>
1607: _FILE variables for Docker swarm secrets r=mergify[bot] a=lub
## What type of PR?
enhancement
## What does this PR do?
This PR enables usage of DB_PW_FILE and SECRET_KEY_FILE instead of DB_PW and SECRET_KEY to load these values from files instead of supplying them directly. That way it's possible to use Docker secrets.
### Related issue(s)
## Prerequistes
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.
- [x] 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/guide.html#changelog) entry file.
Co-authored-by: lub <git@lubiland.de>
- yaml-import is now logged via schema.Logger
- iremoved relative imports - not used in other mailu modules
- removed develepment comments
- added Mailconfig.check method to check for duplicate domain names
- converted .format() to .format_map() where possible
- switched to yaml multiline dump for dkim_key
- converted dkim_key import from regex to string functions
- automatically unhide/unexclude explicitly specified attributes on dump
- use field order when loading to stabilize import
- fail when using 'hash_password' without 'password'
- fixed logging of dkim_key
- fixed pruning and deleting of lists
- modified error messages
- added debug flag and two verbosity levels
1684: add warning about removing front r=mergify[bot] a=lub
## What type of PR?
documentation
## What does this PR do?
### Related issue(s)
- caused confusion e.g. in #1678
## Prerequistes
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.
- [x] In case of feature or enhancement: documentation updated accordingly
- [ ] ~~Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/guide.html#changelog) entry file.~~
Co-authored-by: lub <git@lubiland.de>
Adds a 'none' env option to WEBROOT_REDIRECT so that no `location /`
configuration is written to nginx.conf.
This is useful for setting up Mailu and Mailman where we override the
root to proxy to the mailing list server instead. Without this change
the nginx container will not start, or for 1.7 users can set their
WEBMAIL_PATH to / with no webmail to get the same results.
This fix means that future users don't have to choose between webmail
and a root override and makes the configuration intention clear.
Add additional warning to ´experimental' notice in setup for stack.
Add a notice the shipped PostgreSQL is deprecated.
Make the external PostgreSQL database the default option.
Make 1.7 the default version (stable_version': '1.7', in docs\conf.py)
Update mergify.yml with 1.8 version
1592: Add documentation for the web administration gui. r=mergify[bot] a=Diman0
## What type of PR?
Documentation
## What does this PR do?
This PR adds the section Web Administration Interface to the documentation site which completely documents all available settings in the web administration interface.
### Related issue(s)
- Closes issue #1590 (please close this issue for me)
## Prerequistes
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.
- [ Done ] In case of feature or enhancement: documentation updated accordingly
- [ Done ] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/guide.html#changelog) entry file.
Co-authored-by: Dimitri Huisman <diman@huisman.xyz>
Co-authored-by: Dimitri Huisman <52963853+Diman0@users.noreply.github.com>
1601: Fixing documentation minor typo r=mergify[bot] a=akevinieron
## What type of PR?
Documentation
## What does this PR do?
Fixing minor typo on certificate section
## Related issue(s)
N/A
Co-authored-by: Kevin Jimenez <kevinjimenezlorenzo@gmail.com>
1553: Added FAQ about SMTP Banner r=mergify[bot] a=arother
## What type of PR?
documentation
## What does this PR do?
Adding FAQ about SMTP Banner
### Related issue(s)
- closes#1368
## Prerequistes
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.
Co-authored-by: Andreas Rother <andreas@rother.org>
Co-authored-by: Dario Ernst <github@kanojo.de>
Changing Hostname in the .env and in the banner might lead to various breakages of the setup — so don’t advise it to users in the FAQ.
Co-authored-by: Thomas Sänger <thomas@gecko.space>
1570: Update webmail.yaml r=mergify[bot] a=DerH4NNES
Duplicated "ports:"
## What type of PR?
bug-fix
## What does this PR do?
fixes service specs
### Related issue(s)
/
Co-authored-by: Sascha Hannes <saschahannes@web.de>
1538: Introduce environment variable to control dovecot full-text-search r=mergify[bot] a=tremlin
## What type of PR?
Enhancement
## What does this PR do?
In #1320 a full-text-search feature was enabled in Dovecot by default. Since this can have a big impact on performance, I think it's preferable to offer an option to disable the feature if it is not needed. This PR doesn't change the default behavior (FTS on).
### Related issue(s)
- #1320
## Prerequistes
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 accordinagly
- [ ] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/guide.html#changelog) entry file.
Co-authored-by: Thomas Rehn <thomas.rehn@initos.com>
1499: Harmonization of the various docker-compose.yml templates r=mergify[bot] a=ofthesun9
## What type of PR?
Mainly documentation and update of the docker-compose.yml templates
## What does this PR do?
- Update of setup/flavors/stack/docker-compose.yml and docs/compose/docker-compose.yml to keep parity with setup/flavors/compose/docker-compose.yml (last changes with pr1444)
- Also refresh of the mkdir command found in setup/flavors/stack/setup.html to cope with the creation of mailqueue; overrides/nginx, overrides/dovecot folders.
### Related issue(s)
None
## Prerequistes
- [x] In case of feature or enhancement: documentation updated accordingly
Co-authored-by: ofthesun9 <olivier@ofthesun.net>
1478: Allow to enforce TLS for outbound r=mergify[bot] a=micw
using OUTBOUND_TLS_LEVEL=encrypt (default is 'may')
## What type of PR?
enhancement
## What does this PR do?
Add an option to postfix to enforce outbound traffic to be TLS encrypted.
## Prerequistes
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.
- [x] 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/guide.html#changelog) entry file.
1501: In setup/flavor, change DMARC RUA and RUF email default settings r=mergify[bot] a=ofthesun9
## What type of PR?
bug-fix
## What does this PR do?
This PR changes the default value used to set DMARC_RUA and DMARC_RUF:
DMARC_RUA and DMARC_RUF defaults will reuse the value defined for POSTMASTER,
instead of 'admin' as previously.
Please note that the setup tool doesn't allow (yet?) to define dmarc_rua nor dmarc_ruf, so the default value is indeed used for the time being.
### Related issue(s)
closes#1463
## Prerequistes
- [x] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/guide.html#changelog) entry file.
1532: Replace SMPT with SMTP r=mergify[bot] a=dhoppe
1543: Disable Health checks on swarm mode r=mergify[bot] a=ofthesun9
ref: https://github.com/moby/moby/issues/35451
## What type of PR?
bug-fix
## What does this PR do?
Modify the docker-compose.yml template used by setup (swarm flavor) to disable Health checks on swarm mode for each service
### Related issue(s)
closes#1289
## Prerequistes
- [x] add [changelog](https://mailu.io/master/contributors/guide.html#changelog) entry file.
Co-authored-by: Michael Wyraz <michael@wyraz.de>
Co-authored-by: ofthesun9 <olivier@ofthesun.net>
Co-authored-by: Dennis Hoppe <github@debian-solutions.de>
Harmonization (following pr1444) between:
- docs/compose/docker-compose.yml
- setup/flavors/stack/docker-compose.yml
- setup/flavors/compose/docker-compose.yml
Also refresh of the mkdir command found in setup/flavors/stack/setup.html
1470: Adding faq entry: How to teach Bayes ham and spam #1438 r=muhlemmer a=ofthesun9
Fix#1438
## What type of PR?
documentation (faq)
## What does this PR do?
This PR add an faq entry to cover #1438
### Related issue(s)
closes#1438
## Prerequistes
- [x] In case of feature or enhancement: documentation updated accordingly
Co-authored-by: ofthesun9 <olivier@ofthesun.net>
1423: Doc update: proxy_set_header required for admin r=mergify[bot] a=ofthesun9
Copy Paste of an existing PR whose upstream branch is gone
Fix#1318
## What type of PR?
documentation
## What does this PR do?
### Related issue(s)
closes#1318 (copy paste of 1318)
## Prerequistes
- [x ] 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/guide.html#changelog) entry file.
Co-authored-by: ofthesun9 <olivier@ofthesun.net>
1385: [docs] fix variable name for RECIPIENT_DELIMETER r=Nebukadneza a=eleith
## What type of PR?
documentation
## What does this PR do?
the variable name as referenced by postfix and dovecot and mailu.env are all `RECIPIENT_DELIMETER`
example, see:
dcda412b99/core/postfix/conf/main.cf (L40)
Co-authored-by: eleith <eleith@users.noreply.github.com>
1333: Fix bad file path in documentation r=mergify[bot] a=NeroPcStation
## What type of PR?
documentation
## What does this PR do?
### Related issue(s)
- #1263
Co-authored-by: NeroPcStation <neroxbox28@gmail.com>
1359: Refactor the rate limiting code r=mergify[bot] a=kaiyou
## What type of PR?
Enhancement
## What does this PR do?
Rate limiting was already redesigned to use Python limits. This
introduced some unexpected behavior, including the fact that only
one criteria is supported per limiter. Docs and setup utility are
updated with this in mind.
Also, the code was made more generic, so limiters can be delivered
for something else than authentication. Authentication-specific
code was moved directly to the authentication routine.
### Related issue(s)
No specific issue.
## Prerequistes
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.
- [x] 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/guide.html#changelog) entry file.
Co-authored-by: kaiyou <pierre@jaury.eu>
Rate limiting was already redesigned to use Python limits. This
introduced some unexpected behavior, including the fact that only
one criteria is supported per limiter. Docs and setup utility are
updated with this in mind.
Also, the code was made more generic, so limiters can be delivered
for something else than authentication. Authentication-specific
code was moved directly to the authentication routine.
1351: Add some faq entries r=hoellen a=kaiyou
## What type of PR?
Documentation
## What does this PR do?
Add missing faq entries
### Related issue(s)
- Closes: #853
- Closes: #897
- Closes: #1090
- Closes: #1315
## Prerequistes
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.
- [x] 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/guide.html#changelog) entry file.
Co-authored-by: kaiyou <pierre@jaury.eu>
1350: Update the tlv1 faq to indicate that a full config rewrite is required r=mergify[bot] a=kaiyou
## What type of PR?
Documentation
## What does this PR do?
Update the tlv1 faq to indicate that a full config rewrite is required
### Related issue(s)
- Closes: #944
## Prerequistes
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.
- [x] 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/guide.html#changelog) entry file.
Co-authored-by: kaiyou <pierre@jaury.eu>
1278: Limiter implementation r=kaiyou a=micw
## What type of PR?
(Feature, enhancement, bug-fix, documentation)
## What does this PR do?
Adds a custom limter based on the "limits" lirary that counts up on failed auths only
### Related issue(s)
- closes#1195
- closes#634
## Prerequistes
- [X] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/guide.html#changelog) entry file.
Co-authored-by: Michael Wyraz <michael@wyraz.de>
Co-authored-by: micw <michael@wyraz.de>
1308: Use redis 5 on k8s & add selector r=mergify[bot] a=der-eismann
## What type of PR?
Enhancement
## What does this PR do?
This PR is updating Redis to version 5 in the kubernetes manifests. It is already used in the compose and swarm files, so I don't expect any incompatibilities. There is no necessary migration, you just can't go back.
In addition I added a selector to the manifest and applied a consistent formatting.
## Prerequistes
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/guide.html#changelog) entry file.
Co-authored-by: Philipp Trulson <philipp@trulson.de>
1241: Change extensions/v1beta to apps/v1 to be compliant with Kubernetes 1.16 r=mergify[bot] a=WebSpider
## What type of PR?
Enhancement
## What does this PR do?
Changes to Kubernetes YAML files to be able to use this in Kubernetes 1.16
### Related issue(s)
- Fixes#1237
## Prerequistes
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.
- N/A 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/guide.html#changelog) entry file.
Co-authored-by: WebSpider <webspider@bitlair.nl>
Co-authored-by: micw <michael@wyraz.de>
1215: Allow specifying the traefik version for cert dumping r=mergify[bot] a=timoschwarzer
## What type of PR?
Enhancement
## What does this PR do?
### Related issue(s)
- #1011
## Prerequistes
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.
- [X] 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/guide.html#changelog) entry file.
Co-authored-by: Timo Schwarzer <me@timoschwarzer.com>
1229: Fix docs warnings r=mergify[bot] a=muhlemmer
## What type of PR?
Documentation
## What does this PR do?
1. Fix various build warnings from Sphinx that sneaked into the project over time, and fixed them.
2. Enable the `-W` option for `sphinx-build` to elevate `warning` to `error` in order to make build fail in case of syntax errors. This will give a better feedback from Travis to Pull Requests with Documentation updates. They will now block in case of syntax errors, so we don;t have to cleanup afterwards.
### Related issue(s)
None
## Prerequistes
N/A
Co-authored-by: Tim Möhlmann <muhlemmer@gmail.com>
1151: Start writing the contribution guidelines r=mergify[bot] a=kaiyou
## What type of PR?
Documentation
## What does this PR do?
It provides a first suggested version of contribution guidelines for the project. These are very open do discussion. This was suggested in #1133.
## Prerequistes
- [x] 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/guide.html#changelog) entry file.
Co-authored-by: kaiyou <pierre@jaury.eu>
985: Permit raspberry pi (and other architectures) builds r=mergify[bot] a=abondis
## What type of PR?
Enhancement
## What does this PR do?
Add an option to select base images and permit building for different CPU architectures.
### Related issue(s)
N/A
## Prerequistes
- [X] documentation updated accordingly
- [x] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/guide.html#changelog) entry file.
Co-authored-by: Aurélien Bondis <aurelien.bondis@gmail.com>
Co-authored-by: Aurelien <aurelien.bondis@gmail.com>
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