diff --git a/Containers/nextcloud/Dockerfile b/Containers/nextcloud/Dockerfile
index 8695d513..bb05eb27 100644
--- a/Containers/nextcloud/Dockerfile
+++ b/Containers/nextcloud/Dockerfile
@@ -1,15 +1,21 @@
-# From https://github.com/nextcloud/docker/blob/master/22/fpm/Dockerfile
-FROM php:8.0-fpm-bullseye
+# From https://github.com/nextcloud/docker/blob/master/23/fpm-alpine/Dockerfile
+FROM php:8.0-fpm-alpine
+
+# Custom: change id of www-data user as it needs to be the same like on old installations
+RUN set -ex; \
+    apk add --no-cache shadow; \
+    deluser www-data; \
+    groupmod -g 333 xfs; \
+    usermod -u 333 -g 333 xfs; \
+    addgroup -g 33 -S www-data; \
+    adduser -u 33 -D -S -G www-data www-data
 
 # entrypoint.sh and cron.sh dependencies
 RUN set -ex; \
     \
-    apt-get update; \
-    apt-get install -y --no-install-recommends \
+    apk add --no-cache \
         rsync \
-        bzip2 \
-    ; \
-    rm -rf /var/lib/apt/lists/*;
+    ;
 
 # install the PHP extensions we need
 # see https://docs.nextcloud.com/server/stable/admin_manual/installation/source_installation.html
@@ -17,30 +23,28 @@ ENV PHP_MEMORY_LIMIT 512M
 ENV PHP_UPLOAD_LIMIT 10G
 RUN set -ex; \
     \
-    savedAptMark="$(apt-mark showmanual)"; \
-    \
-    apt-get update; \
-    apt-get install -y --no-install-recommends \
-        libcurl4-openssl-dev \
+    apk add --no-cache --virtual .build-deps \
+        $PHPIZE_DEPS \
+        autoconf \
+        freetype-dev \
+        icu-dev \
         libevent-dev \
-        libfreetype6-dev \
-        libicu-dev \
-        libjpeg-dev \
-        libldap2-dev \
+        libjpeg-turbo-dev \
         libmcrypt-dev \
-        libmemcached-dev \
         libpng-dev \
-        libpq-dev \
+        libmemcached-dev \
         libxml2-dev \
-        libmagickwand-dev \
         libzip-dev \
+        openldap-dev \
+        pcre-dev \
+        postgresql-dev \
+        imagemagick-dev \
         libwebp-dev \
-        libgmp-dev \
+        gmp-dev \
     ; \
     \
-    debMultiarch="$(dpkg-architecture --query DEB_BUILD_MULTIARCH)"; \
     docker-php-ext-configure gd --with-freetype --with-jpeg --with-webp; \
-    docker-php-ext-configure ldap --with-libdir="lib/$debMultiarch"; \
+    docker-php-ext-configure ldap; \
     docker-php-ext-install -j "$(nproc)" \
         bcmath \
         exif \
@@ -69,19 +73,14 @@ RUN set -ex; \
     ; \
     rm -r /tmp/pear; \
     \
-# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
-    apt-mark auto '.*' > /dev/null; \
-    apt-mark manual $savedAptMark; \
-    ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
-        | awk '/=>/ { print $3 }' \
-        | sort -u \
-        | xargs -r dpkg-query -S \
-        | cut -d: -f1 \
-        | sort -u \
-        | xargs -rt apt-mark manual; \
-    \
-    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
-    rm -rf /var/lib/apt/lists/*
+    runDeps="$( \
+        scanelf --needed --nobanner --format '%n#p' --recursive /usr/local/lib/php/extensions \
+            | tr ',' '\n' \
+            | sort -u \
+            | awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+    )"; \
+    apk add --virtual .nextcloud-phpext-rundeps $runDeps; \
+    apk del .build-deps
 
 # set recommended PHP.ini settings
 # see https://docs.nextcloud.com/server/stable/admin_manual/configuration_server/server_tuning.html#enable-php-opcache
@@ -109,12 +108,10 @@ VOLUME /var/www/html
 ENV NEXTCLOUD_VERSION 23.0.1
 
 RUN set -ex; \
-    fetchDeps=" \
+    apk add --no-cache --virtual .fetch-deps \
+        bzip2 \
         gnupg \
-        dirmngr \
-    "; \
-    apt-get update; \
-    apt-get install -y --no-install-recommends $fetchDeps; \
+    ; \
     \
     curl -fsSL -o nextcloud.tar.bz2 \
         "https://download.nextcloud.com/server/releases/nextcloud-${NEXTCLOUD_VERSION}.tar.bz2"; \
@@ -122,7 +119,7 @@ RUN set -ex; \
         "https://download.nextcloud.com/server/releases/nextcloud-${NEXTCLOUD_VERSION}.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
-    gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
+    gpg --batch --keyserver keyserver.ubuntu.com  --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
     gpg --batch --verify nextcloud.tar.bz2.asc nextcloud.tar.bz2; \
     tar -xjf nextcloud.tar.bz2 -C /usr/src/; \
     gpgconf --kill all; \
@@ -131,9 +128,7 @@ RUN set -ex; \
     mkdir -p /usr/src/nextcloud/data; \
     mkdir -p /usr/src/nextcloud/custom_apps; \
     chmod +x /usr/src/nextcloud/occ; \
-    \
-    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false $fetchDeps; \
-    rm -rf /var/lib/apt/lists/*
+    apk del .fetch-deps
 
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/nextcloud/config/
@@ -141,31 +136,28 @@ COPY config/* /usr/src/nextcloud/config/
 ENTRYPOINT ["/entrypoint.sh"]
 CMD ["php-fpm"]
 
-# Template from https://github.com/nextcloud/docker/blob/master/.examples/dockerfiles/full/fpm/Dockerfile
+# Template from https://github.com/nextcloud/docker/blob/master/.examples/dockerfiles/full/fpm-alpine/Dockerfile
 
 RUN set -ex; \
     \
-    apt-get update; \
-    apt-get install -y --no-install-recommends \
+    apk add --no-cache \
         ffmpeg \
-        libmagickcore-6.q16-6-extra \
+        imagemagick \
         procps \
-        smbclient \
+        samba-client \
         supervisor \
 #       libreoffice \
-    ; \
-    rm -rf /var/lib/apt/lists/*
+    ;
 
 RUN set -ex; \
     \
-    savedAptMark="$(apt-mark showmanual)"; \
-    \
-    apt-get update; \
-    apt-get install -y --no-install-recommends \
-        libbz2-dev \
-        libc-client-dev \
-        libkrb5-dev \
-        libsmbclient-dev \
+    apk add --no-cache --virtual .build-deps \
+        $PHPIZE_DEPS \
+        imap-dev \
+        krb5-dev \
+        openssl-dev \
+        samba-dev \
+        bzip2-dev \
     ; \
     \
     docker-php-ext-configure imap --with-kerberos --with-imap-ssl; \
@@ -176,19 +168,14 @@ RUN set -ex; \
     pecl install smbclient; \
     docker-php-ext-enable smbclient; \
     \
-# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
-    apt-mark auto '.*' > /dev/null; \
-    apt-mark manual $savedAptMark; \
-    ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
-        | awk '/=>/ { print $3 }' \
-        | sort -u \
-        | xargs -r dpkg-query -S \
-        | cut -d: -f1 \
-        | sort -u \
-        | xargs -rt apt-mark manual; \
-    \
-    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
-    rm -rf /var/lib/apt/lists/*
+    runDeps="$( \
+        scanelf --needed --nobanner --format '%n#p' --recursive /usr/local/lib/php/extensions \
+            | tr ',' '\n' \
+            | sort -u \
+            | awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+    )"; \
+    apk add --virtual .nextcloud-phpext-rundeps $runDeps; \
+    apk del .build-deps
 
 RUN mkdir -p \
     /var/log/supervisord \
@@ -204,12 +191,11 @@ CMD ["/usr/bin/supervisord", "-c", "/supervisord.conf"]
 # Custom:
 RUN set -ex; \
     \
-    apt-get update; \
-    apt-get install -y --no-install-recommends \
-        netcat \
+    apk add --no-cache \
+        bash \
+        netcat-openbsd \
         openssl \
         gnupg \
-        dirmngr \
         git \
         postgresql-client \
     ; \
@@ -222,14 +208,16 @@ RUN set -ex; \
     sed -i 's/^pm.min_spare_servers =.*/pm.min_spare_servers = 25/' /usr/local/etc/php-fpm.d/www.conf; \
     sed -i 's/^pm.max_spare_servers =.*/pm.max_spare_servers = 75/' /usr/local/etc/php-fpm.d/www.conf
 
-RUN rm -rf /tmp/nextcloud-aio && \
+RUN set -ex; \
+    rm -rf /tmp/nextcloud-aio && \
     mkdir -p /tmp/nextcloud-aio && \
     cd /tmp/nextcloud-aio && \
     git clone https://github.com/nextcloud-releases/all-in-one.git --depth 1 .; \
     mkdir -p /usr/src/nextcloud/apps/nextcloud-aio; \
     cp -r ./app/* /usr/src/nextcloud/apps/nextcloud-aio/
 
-RUN chown www-data:root -R /usr/src && \
+RUN set -ex; \
+    chown www-data:root -R /usr/src && \
     chown www-data:root -R /usr/local/etc/php/conf.d && \
     chown www-data:root -R /var/log/supervisord/ && \
     chown www-data:root -R /var/run/supervisord/ && \
@@ -239,14 +227,16 @@ RUN chown www-data:root -R /usr/src && \
 
 COPY start.sh /
 COPY notify.sh /
-RUN chmod +x /start.sh && \
+RUN set -ex; \
+    chmod +x /start.sh && \
     chmod +r /supervisord.conf && \
     chmod +x /entrypoint.sh && \
     chmod +r /upgrade.exclude && \
     chmod +x /cron.sh && \
     chmod +x /notify.sh
 
-RUN mkdir /mnt/ncdata; \
+RUN set -ex; \
+    mkdir /mnt/ncdata; \
     chown www-data:www-data /mnt/ncdata;
 
 VOLUME /mnt/ncdata