nginx.conf

# Create a directory at /opt/smithereen/nginx_cache/images first!
proxy_cache_path /opt/smithereen/nginx_cache/images levels=1:2 keys_zone=sm_images:10m max_size=1G inactive=3650d;

server{
    server_name YOUR_DOMAIN_HERE;

    client_max_body_size 40M;
    location /i/ {
        proxy_pass http://127.0.0.1:4560;
        proxy_cache sm_images;
        proxy_cache_lock on;
        proxy_ignore_headers Cache-Control Expires;
        proxy_cache_valid 3650d;
        expires max;
    }
    location / {
        proxy_pass http://127.0.0.1:4567;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $remote_addr;
    }

    http2_push_preload on;

    listen [::]:443 ssl http2;
    listen 443 ssl http2;
}