Dynamic attachment size

webmails/roundcube/Dockerfile

@@ -7,7 +7,7 @@ RUN apt-get update && apt-get install -y \
 ENV ROUNDCUBE_URL https://github.com/roundcube/roundcubemail/releases/download/1.3.8/roundcubemail-1.3.8-complete.tar.gz
 
 RUN apt-get update && apt-get install -y \
-      zlib1g-dev \
+      zlib1g-dev python3-jinja2 \
  && docker-php-ext-install zip \
  && echo date.timezone=UTC > /usr/local/etc/php/conf.d/timezone.ini \
  && rm -rf /var/www/html/ \
@@ -22,7 +22,7 @@ RUN apt-get update && apt-get install -y \
  && chown -R www-data: logs temp \
  && rm -rf /var/lib/apt/lists
 
-COPY php.ini /usr/local/etc/php/conf.d/roundcube.ini
+COPY php.ini /php.ini
 COPY config.inc.php /var/www/html/config/
 COPY start.py /start.py
 

webmails/roundcube/php.ini

@@ -1,3 +1,4 @@
 date.timezone=UTC
-upload_max_filesize = 25M
-post_max_size = 25M
+upload_max_filesize = {{ MAX_FILESIZE }}M
+post_max_size = {{ MAX_FILESIZE }}M
+

webmails/roundcube/start.py

@@ -1,6 +1,13 @@
 #!/usr/bin/python3
 
 import os
+import jinja2
+
+convert = lambda src, dst: open(dst, "w").write(jinja2.Template(open(src).read()).render(**os.environ))
+
+os.environ["MAX_FILESIZE"] = str(int(int(os.environ.get("MESSAGE_SIZE_LIMIT"))*0.66/1048576))
+
+convert("/php.ini", "/usr/local/etc/php/conf.d/roundcube.ini")
 
 # Fix some permissions
 os.system("mkdir -p /data/gpg")