set content type, render directory index

nginx.conf.template

@@ -5,6 +5,9 @@ proxy_cache_path /var/cache/nginx/builds levels=1:2
 server {
     listen 3000;
 
+    # Redirect directory requests to index.html
+    rewrite ^(.*)/$ $1/index.html last;
+
     location / {
         proxy_pass $BUCKET_ORIGIN;
         proxy_cache builds;
@@ -16,12 +19,18 @@ server {
         proxy_hide_header x-amz-id-2;
         proxy_hide_header x-amz-meta-s3cmd-attrs;
         proxy_hide_header Set-Cookie;
+        proxy_hide_header Content-Type;
         proxy_ignore_headers Set-Cookie;
 
         proxy_set_header Host $BUCKET_HOST;
         proxy_set_header Cookie "";
         proxy_set_header Authorization "";
 
+        # Let Nginx set Content-Type from file extension
+        types { }
+        include /etc/nginx/mime.types;
+        default_type application/octet-stream;
+
         add_header X-Cache-Status $upstream_cache_status;
     }
 }