Merge #3279

3279: Alpine 3.20 r=mergify[bot] a=nextgens

## What type of PR?

enhancement

## What does this PR do?

Switch to alpine 3.20. We still need edge for hardened-malloc.

Ensure we use 'normalize-icu' when indexing keywords in mails.

### Related issue(s)
- #2977

## 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>

core/base/Dockerfile

@@ -3,7 +3,7 @@
 # base system image (intermediate)
 # Note when updating the alpine tag, first manually run the workflow .github/workflows/mirror.yml.
 # Just run the workflow with the tag that must be synchronised.
-ARG DISTRO=ghcr.io/mailu/alpine:3.19.1
+ARG DISTRO=ghcr.io/mailu/alpine:3.20
 FROM $DISTRO as system
 
 ENV TZ=Etc/UTC LANG=C.UTF-8
@@ -66,8 +66,6 @@ RUN set -euxo pipefail \
   ; rm -rf src/tests/*php7*/ src/tests/*session*/ src/tests/broken_configuration/ src/tests/*cookie* src/tests/upload_validation/ \
   ; apk add --virtual .build-deps php83-dev php83-cgi php83-simplexml php83-xml pcre-dev build-base php83-pear php83-openssl re2c \
   ; pecl83 install vld-beta \
-  ; ln -s /usr/bin/phpize83 /usr/bin/phpize \
-  ; ln -s /usr/bin/php-config83 /usr/bin/php-config \
   ; make -j $(grep -c processor /proc/cpuinfo) release \
   ; cp src/.libs/snuffleupagus.so /app \
   ; rm -rf /root/.cargo /tmp/*.pem /root/.cache

core/dovecot/Dockerfile

@@ -7,7 +7,6 @@ ARG VERSION
 LABEL version=$VERSION
 
 RUN set -euxo pipefail \
-  ; echo -e 'http://dl-cdn.alpinelinux.org/alpine/edge/main\nhttp://dl-cdn.alpinelinux.org/alpine/edge/testing\nhttp://dl-cdn.alpinelinux.org/alpine/edge/community' >> /etc/apk/repositories \
   ; apk add --no-cache 'dovecot<2.4' dovecot-lmtpd dovecot-pigeonhole-plugin dovecot-pop3d dovecot-submissiond rspamd-client dovecot-fts-flatcurve \
   ; mkdir /var/lib/dovecot
 

core/dovecot/conf/dovecot.conf

@@ -69,9 +69,9 @@ plugin {
   fts_enforced = yes
   fts_autoindex_exclude = \Trash
   fts_autoindex_exclude1 = \Junk
-  fts_filters = normalizer-icu snowball stopwords
-  fts_filters_en = lowercase snowball english-possessive stopwords
-  fts_filters_fr = lowercase snowball contractions stopwords
+  fts_filters = normalizer-icu lowercase snowball stopwords
+  fts_filters_en = normalizer-icu lowercase snowball english-possessive stopwords
+  fts_filters_fr = normalizer-icu lowercase snowball contractions stopwords
   fts_header_excludes = Received DKIM-* ARC-* X-* x-* Comments Delivered-To Return-Path Authentication-Results Message-ID References In-Reply-To Thread-* Accept-Language Content-* MIME-Version
   {% if FULL_TEXT_SEARCH_ATTACHMENTS %}
   fts_tika = http://{{ FTS_ATTACHMENTS_ADDRESS }}:9998/tika/

towncrier/newsfragments/3279.misc

@@ -0,0 +1,2 @@
+Switch to alpine 3.20, remove a dependency on edge for dovecot
+Ensure we user normalizer-icu in all languages

webmails/Dockerfile

@@ -20,7 +20,6 @@ RUN set -euxo pipefail \
     aspell-uk aspell-ru aspell-fr aspell-de aspell-en \
   ; rm /etc/nginx/http.d/default.conf \
   ; rm /etc/php83/php-fpm.d/www.conf \
-  ; ln -s /usr/bin/php83 /usr/bin/php \
   ; mkdir -m 700 /root/.gnupg/ \
   ; gpg --import /tmp/snappymail.asc \
   ; gpg --import /tmp/roundcube.asc \