Add igbinary as serializer for increased performance

- Install igbinary via PECL
- Enable igbinary support for memcached and redis
- Configure PHP to use igbinary for APCu and session serialization
- Update Dockerfile to include igbinary and its configuration

Signed-off-by: ernolf <raphael.gradenwitz@googlemail.com>

Containers/nextcloud/Dockerfile

@@ -78,12 +78,18 @@ RUN set -ex; \
     ; \
     \
 # pecl will claim success even if one install fails, so we need to perform each install separately
+    pecl install igbinary-3.2.15; \ 
     pecl install APCu-5.1.23; \
-    pecl install memcached-3.2.0; \
-    pecl install redis-6.0.2; \
+    pecl install --configureoptions \
+        'enable-memcached-igbinary="yes"' \
+        memcached-3.2.0; \
+    pecl install --configureoptions \
+        'enable-redis-igbinary="yes" enable-redis-zstd="yes" enable-redis-lz4="yes"' \
+        redis-6.0.2; \
     pecl install imagick-3.7.0; \
     \
     docker-php-ext-enable \
+        igbinary \
         apcu \
         memcached \
         redis \
@@ -99,6 +105,11 @@ RUN set -ex; \
     apk add --no-cache --virtual .nextcloud-phpext-rundeps $runDeps; \
     apk del .build-deps; \
     \
+    { \
+        echo 'apc.serializer=igbinary'; \
+        echo 'session.serialize_handler=igbinary'; \
+    } >> /usr/local/etc/php/conf.d/docker-php-ext-igbinary.ini; \
+    \
 # set recommended PHP.ini settings
 # see https://docs.nextcloud.com/server/stable/admin_manual/configuration_server/server_tuning.html#enable-php-opcache
     { \