nginx.conf

server {
    server_name localhost $hostname "";   
    listen 80;
    gzip             on;
    gzip_min_length  2000;
    gzip_proxied     any;
    gzip_types       text/html application/json; 

    proxy_read_timeout 60s;
    client_max_body_size 64M;

    # set to where your devpi-server state is on the filesystem
    root /data;  

    # authentication
    auth_basic "Restricted";
    auth_basic_user_file /etc/nginx-htpasswd/htpasswd;

    # try serving static files directly
    location ~ /\+f/ {
        # workaround to pass non-GET/HEAD requests through to the named location below
        error_page 418 = @proxy_to_app;
        if ($request_method !~ (GET)|(HEAD)) {
            return 418; 
        }

        expires max;
        try_files /+files$uri @proxy_to_app;
    }
    # try serving docs directly
    location ~ /\+doc/ {
        try_files $uri @proxy_to_app;
    }
    location / {
        # workaround to pass all requests to / through to the named location below
        error_page 418 = @proxy_to_app;
        return 418;
    }
    location @proxy_to_app {
        proxy_pass http://localhost:3141;
        proxy_set_header X-outside-url $scheme://$host:$server_port;
        proxy_set_header X-Real-IP $remote_addr;
        expires -1;  # no-cache
    }
}