create writable data directories

build.sh

@@ -14,28 +14,28 @@ BUILD_PACKAGES="rsync"
 # Packages required to serve the website and run the services, in
 # addition to those already installed by the base apache2 image.
 PACKAGES="
-	libapache2-mod-sso
-        php-mysql
-        php-gd
-        php-imap
-        php-mcrypt
-	php-mbstring
-	php-xml
-	php-zip
-        mysql-client
+    libapache2-mod-sso
+    php-mysql
+    php-gd
+    php-imap
+    php-mcrypt
+    php-mbstring
+    php-xml
+    php-zip
+    mysql-client
 "
 
 # Apache modules to enable.
 APACHE_MODULES_ENABLE="
-        rewrite
-	sso
-	unique_id
+    rewrite
+    sso
+    unique_id
 "
 export APACHE_MODULES_ENABLE
 
 # Config snippets to enable for Apache.
 APACHE_CONFIG_ENABLE="
-        php7.0-fpm
+    php7.0-fpm
 "
 export APACHE_CONFIG_ENABLE
 
@@ -90,6 +90,8 @@ mkdir -p /data
 # Fix runtime permissions for the Roundcube data directories.
 for d in temp logs ; do
     rm -fr /var/www/webmail/$d || true
+    test -d /data/$d || mkdir /data/$d 
+    chown 1777 /data/$d
     ln -sf /data/$d /var/www/webmail/$d
 done