diff --git a/docker/roundcube/Dockerfile b/docker/roundcube/Dockerfile
index 26e80451..d8b20148 100644
--- a/docker/roundcube/Dockerfile
+++ b/docker/roundcube/Dockerfile
@@ -1,92 +1,126 @@
 FROM apheleia/almalinux9
 
 ENV HOME=/opt/app-root/src
 
 # Add kolab
 RUN rpm --import https://mirror.apheleia-it.ch/repos/Kolab:/16/key.asc && \
     rpm -Uvh https://mirror.apheleia-it.ch/repos/Kolab:/16/kolab-16-for-el9.rpm
 
 # Install php modules
 RUN sed -i -e '/^ssl/d' /etc/yum.repos.d/kolab*.repo && \
     dnf config-manager --enable kolab-16 &&\
     dnf -y --setopt=install_weak_deps=False --setopt tsflags= install php-kolab php-kolabformat \
         composer \
         diffutils \
         file \
         git \
         make \
         unzip \
         curl-minimal \
         mariadb \
         which \
         rsync \
         openssl-devel \
         httpd \
         patch \
         php-cli \
         php-common \
         php-devel \
         php-ldap \
         php-opcache \
         php-pecl-apcu \
         php-mysqlnd \
         php-gd \
         php-fpm \
         php-pear \
         ImageMagick \
         re2c \
         npm \
         wget && \
     dnf clean all
 
 RUN npm install -g less less-plugin-clean-css
 
 WORKDIR ${HOME}
 
 COPY rootfs/opt/app-root/src/build.sh /opt/app-root/src/
 COPY rootfs/opt/app-root/src/update.sh /opt/app-root/src/
 COPY rootfs/opt/app-root/src/composer.json /opt/app-root/src/
 COPY rootfs/opt/app-root/src/roundcubemail-config-templates /opt/app-root/src/roundcubemail-config-templates
 
 ARG GIT_REF_ROUNDCUBEMAIL=dev/kolab-1.5
 ARG GIT_REMOTE_ROUNDCUBEMAIL=https://git.kolab.org/source/roundcubemail.git
 ARG GIT_REF_ROUNDCUBEMAIL_PLUGINS=master
 ARG GIT_REMOTE_ROUNDCUBEMAIL_PLUGINS=https://git.kolab.org/diffusion/RPK/roundcubemail-plugins-kolab.git
 ARG GIT_REF_CHWALA=master
 ARG GIT_REMOTE_CHWALA=https://git.kolab.org/diffusion/C/chwala.git
 ARG GIT_REF_SYNCROTON=master
 ARG GIT_REMOTE_SYNCROTON=https://git.kolab.org/diffusion/S/syncroton.git
 ARG GIT_REF_AUTOCONF=master
 ARG GIT_REMOTE_AUTOCONF=https://git.kolab.org/diffusion/AC/autoconf.git
 ARG GIT_REF_IRONY=master
 ARG GIT_REMOTE_IRONY=https://git.kolab.org/source/iRony.git
 ARG GIT_REF_FREEBUSY=master
 ARG GIT_REMOTE_FREEBUSY=https://git.kolab.org/diffusion/F/freebusy.git
 
 RUN /opt/app-root/src/build.sh && \
     chgrp -R 0 /opt/app-root/src && \
     chmod -R g=u /opt/app-root/src && \
     mkdir -p /run/php-fpm && \
     chmod 777 /run/php-fpm && \
     mkdir -p /run/httpd && \
     chmod 777 /run/httpd && \
     mkdir -p /data && \
     chmod 777 /data && \
     chmod -R 777 /etc/php.ini /etc/httpd /var/log/httpd /var/lib/httpd /data && \
     chown -R 1001:0 /opt/app-root/src /data
 
 COPY /rootfs /
 RUN chmod -R 777 /etc/php.ini /etc/httpd
 
 VOLUME /data
 
 ENV RUN_MIGRATIONS=true
+ENV KOLABOBJECTS_COMPAT_MODE=false
+# ENV FILEAPI_KOLABFILES_BASEURI=
+# ENV FILEAPI_WOPI_OFFICE=
+# ENV FILE_API_URL=
+# ENV FILE_API_SERVER_URL=
+# ENV CALENDAR_CALDAV_SERVER=
+# ENV TASKLIST_CALDAV_SERVER=
+# ENV KOLAB_ADDRESSBOOK_CARDDAV_SERVER=
+# ENV KOLAB_FILES_URL=
+# ENV KOLAB_FILES_SERVER_URL=
+# ENV IMAP_HOST=
+# ENV IMAP_PORT=
+# ENV IMAP_TLS=
+# ENV IMAP_PROXY_PROTOCOL=
+# ENV IMAP_ADMIN_LOGIN=
+# ENV IMAP_ADMIN_PASSWORD=
+# ENV DB_RC_USERNAME=
+# ENV DB_RC_PASSWORD=
+# ENV DB_RC_DATABASE=
+# ENV DB_HOST=
+# ENV DES_KEY=
+# ENV APP_DOMAIN=
+# ENV PROXY_WHITELIST=
+# ENV SUBMISSION_HOST=
+# ENV SUBMISSION_PORT=
+# ENV SUBMISSION_ENCRYPTION=
+# ENV DISABLED_PLUGINS=
+# ENV EXTRA_PLUGINS=
+# ENV SQL_DEBUG=
+# ENV MEMCACHE_DEBUG=
+# ENV IMAP_DEBUG=
+# ENV SMTP_DEBUG=
+# ENV DAV_DEBUG=
+# ENV ACTIVESYNC_DEBUG=
 
 USER 1001
 
 EXPOSE 8080
 
 # https://httpd.apache.org/docs/2.4/stopping.html#gracefulstop
 STOPSIGNAL SIGWINCH
 
 CMD [ "/opt/app-root/src/init.sh" ]