Merge remote-tracking branch 'origin/staging' into develop

docker/devenv/docker-compose.yaml

@@ -125,3 +125,7 @@ services:
     ports:
       - "10389:10389"
       - "10636:10636"
+    ulimits:
+      nofile:
+        soft: "1024"
+        hard: "1024"

docker/images/files/nginx.conf

@@ -38,7 +38,10 @@ http {
 
     gzip_types text/plain text/css text/javascript application/javascript application/json application/transit+json;
 
-    resolver $PENPOT_INTERNAL_RESOLVER;
+    proxy_buffer_size 16k;
+    proxy_busy_buffers_size 24k; # essentially, proxy_buffer_size + 2 small buffers of 4k
+    proxy_buffers 32 4k;
+    resolver $PENPOT_INTERNAL_RESOLVER ipv6=off;
 
     map $http_upgrade $connection_upgrade {
         default upgrade;