Merge #2207

2207: Update webmail container configuration to support MESSAGE_SIZE_LIMIT r=mergify[bot] a=marioja

## What type of PR?

bug-fix

## What does this PR do?

### Related issue(s)
- Auto close an issue like: closes #2186 

## Prerequisites
Before we can consider review and merge, please make sure the following list is done and checked.
If an entry in not applicable, you can check it or remove it from the list.

- [x] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/workflow.html#changelog) entry file.


Co-authored-by: Mario Jauvin <marioja@users.noreply.github.com>

towncrier/newsfragments/2207.bugfix

@@ -0,0 +1 @@
+Will update /etc/nginx/nginx.conf and /etc/nginx/http.d/rainloop.conf in webmail container to support MESSAGE_SIZE_LIMIT

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
@@ -67,11 +68,12 @@ RUN apk add --no-cache \
  && apk del unzip
 
 COPY start.py /start.py
+COPY config.py /config.py
 
 EXPOSE 80/tcp
 VOLUME ["/data"]
 
-CMD php-fpm7 && /start.py
+CMD /start.py
 
 HEALTHCHECK CMD curl -f -L http://localhost/ || exit 1
 RUN echo $VERSION >> /version

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

@@ -3,7 +3,7 @@ server {
     listen [::]:80 default_server;
 
     root /var/www/rainloop;
-    
+
     # /dev/stdout (Default), <path>, off
     access_log off;
 
@@ -12,13 +12,16 @@ 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;
     }
 
     location ~ \.php$ {
         fastcgi_split_path_info ^(.+\.php)(/.*)$;
-        
+
         fastcgi_intercept_errors on;
         fastcgi_index  index.php;
 

webmails/rainloop/start.py

@@ -4,6 +4,7 @@ import os
 import shutil
 import logging as log
 import sys
+import subprocess
 from socrate import system, conf
 
 log.basicConfig(stream=sys.stderr, level=os.environ.get("LOG_LEVEL", "WARNING"))
@@ -22,8 +23,11 @@ os.makedirs(base + "configs", exist_ok=True)
 conf.jinja("/defaults/default.ini", os.environ, "/data/_data_/_default_/domains/default.ini")
 conf.jinja("/defaults/application.ini", os.environ, "/data/_data_/_default_/configs/application.ini")
 conf.jinja("/defaults/php.ini", os.environ, "/etc/php7/php.ini")
+# Start the fastcgi process manager now that config files have been adjusted
+os.system("php-fpm7")
 
 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;"])