error_page 400 /errorpages/custom_400.html;
error_page 401 /errorpages/custom_401.html;
error_page 403 /errorpages/custom_403.html;
error_page 404 /errorpages/custom_404.html;
error_page 500 /errorpages/custom_500.html;
error_page 502 /errorpages/custom_502.html;
error_page 503 /errorpages/custom_503.html;
error_page 504 /errorpages/custom_504.html;

# Serve all HTML, CSS, and image assets from one directory
location ^~ /errorpages/ {
    alias /etc/nginx/nginx-snippets/errorpages/;
    # Restrict to safe static types
    types {
        text/html html;
        text/css  css;
        image/png png;
    }
    default_type text/html;
}