Use MESSAGE_SIZE_LIMIT in webmail container also

The webmail container should use the same value as the front container.

webmails/rainloop/Dockerfile

@@ -36,10 +36,11 @@ RUN apk add --no-cache \
  && rm /etc/nginx/http.d/default.conf \
  && rm /etc/php7/php-fpm.d/www.conf \
  && mkdir -p /run/nginx \
- && mkdir -p /var/www/rainloop
+ && mkdir -p /var/www/rainloop \
+ && mkdir -p /config
 
 # nginx / PHP config files
-COPY config/nginx-rainloop.conf /etc/nginx/http.d/rainloop.conf
+COPY config/nginx-rainloop.conf /config/nginx-rainloop.conf
 COPY config/php-rainloop.conf /etc/php7/php-fpm.d/rainloop.conf
 
 # Rainloop login

webmails/rainloop/config.py

@@ -0,0 +1,15 @@
+#!/usr/bin/python3
+
+import os
+import logging as log
+import sys
+from socrate import system, conf
+
+args = os.environ.copy()
+
+log.basicConfig(stream=sys.stderr, level=args.get("LOG_LEVEL", "WARNING"))
+
+# Build final configuration paths
+conf.jinja("/config/nginx-rainloop.conf", args, "/etc/nginx/http.d/rainloop.conf")
+if os.path.exists("/var/run/nginx.pid"):
+    os.system("nginx -s reload")

webmails/rainloop/config/nginx-rainloop.conf

@@ -12,6 +12,9 @@ server {
 
     index index.php;
 
+    # set maximum body size to configured limit
+    client_max_body_size {{ MESSAGE_SIZE_LIMIT|int + 8388608 }};
+
     location / {
         try_files $uri /index.php?$query_string;
     }

webmails/rainloop/start.py

@@ -26,4 +26,5 @@ conf.jinja("/defaults/php.ini", os.environ, "/etc/php7/php.ini")
 os.system("chown -R nginx:nginx /data")
 os.system("chmod -R a+rX /var/www/rainloop/")
 
+subprocess.call(["/config.py"])
 os.execv("/usr/sbin/nginx", ["nginx", "-g", "daemon off;"])