feat: make client_max_body_size configurable via env (#1029)

images/nginx/Dockerfile

@@ -44,6 +44,7 @@ FROM nginxinc/nginx-unprivileged:1.23.3-alpine as frappe
 
 # Set default ENV variables for backwards compatibility
 ENV PROXY_READ_TIMOUT=120
+ENV CLIENT_MAX_BODY_SIZE=50m
 
 # https://github.com/nginxinc/docker-nginx-unprivileged/blob/main/stable/alpine/20-envsubst-on-templates.sh
 COPY nginx-template.conf /etc/nginx/templates/default.conf.template

images/nginx/nginx-template.conf

@@ -87,7 +87,7 @@ server {
 	# optimizations
 	sendfile on;
 	keepalive_timeout 15;
-	client_max_body_size 50m;
+	client_max_body_size ${CLIENT_MAX_BODY_SIZE};
 	client_body_buffer_size 16K;
 	client_header_buffer_size 1k;