Configuring pwstore_scheme in carddav plugin with des_key because Mailu is incompatible with encrypted

webmails/roundcube/Dockerfile

@@ -66,6 +66,7 @@ COPY mailu.php /var/www/html/plugins/mailu/mailu.php
 COPY php.ini /
 COPY config.inc.php /
 COPY start.py /
+COPY config.inc.carddav.php /var/www/html/plugins/carddav/config.inc.php
 
 EXPOSE 80/tcp
 VOLUME /data

webmails/roundcube/config.inc.carddav.php

@@ -0,0 +1,5 @@
+<?php
+
+// Scheme for storing the CardDAV passwords, in order from least to best security.
+// Options: plain, base64, des_key, encrypted (default)
+$prefs['_GLOBAL']['pwstore_scheme'] = 'des_key';