Update Dockerfile

Dockerfile

@@ -13,6 +13,10 @@ USER root
 RUN mkdir /data && chown user:user /data
 
 RUN sed -i 's/listen \(\[::\]:\)\?80 default_server;/listen \17860 default_server;/g' /etc/nginx/nginx.conf
+RUN sed -i '/server {/a \        client_max_body_size 1024M;' /etc/nginx/nginx.conf
+
+#For debugging
+RUN cat /etc/nginx/nginx.conf 
 
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 # End root user section