fix(nginx): Fix proxy settings for Sentry (#463)

Fixes #447.

This patch should also fix issuer regarding large uploads such as minidumps by turning off any buffering.

nginx/nginx.conf

@@ -18,7 +18,6 @@ http {
                       '"$http_user_agent" "$http_x_forwarded_for"';
 
     sendfile        on;
-
     keepalive_timeout  65;
 
     upstream relay {
@@ -34,6 +33,10 @@ http {
         # use the docker DNS server to resolve ips for relay and sentry containers
         resolver 127.0.0.11 ipv6=off;
         client_max_body_size 100M;
+
+        proxy_redirect off;
+        proxy_set_header Host       $host;
+
         location /api/store/ {
             proxy_pass http://relay;
         }