NGINX将网络流量重定向到Netlify网站

我有一台Nginx web服务器，可将流量直接重定向到mydomain.com，连接方式为：

• Wordpress网站
• 节点API

现在我想将所有流量直接重定向到旧的Wordpress网站，转到一个新的Netlify管理的静态网站，该网站的URL类似于purple-rain.Netlify.com

配置的主要部分是：

server {
    listen 443;
    server_name example.com;

    # SSH stuff managed by Certbot skipped

    # What is this for?
    root "/var/www/example/httpdocs";
        index index.html index.htm index.php;
    charset utf-8;

    # Redirect everything that starts with "api" or "img" to the Node API
    # like https://example.com/api/r1/users will match this

    location ~ /(api|img) {
        proxy_pass http://localhost:45001;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }

    # Redirect to the same Node API (can I merge the two?)

    location ~ /js/react {
        proxy_pass http://localhost:45001;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }

    # This redirects everything that does not match to Wordpress?

    location / {
        root /var/www/example-wp/httpdocs;
        try_files $uri $uri/ /index.php?$args;
    }

    # This redirects everything that ends with ".php" to Wordpress?

    location ~* \.php$ {
        root /var/www/example-wp/httpdocs;
        fastcgi_index   index.php;
        fastcgi_pass    unix:/run/php/php7.2-fpm.sock;
        include         fastcgi_params;
        fastcgi_param   SCRIPT_FILENAME    $document_root$fastcgi_script_name;
        fastcgi_param   SCRIPT_NAME        $fastcgi_script_name;
    }
}

我必须如何更改此项以将网站流量重定向到新的Netlify支持的网站

使用我尝试的内容进行编辑：

我试图用

proxy\u pass

指令将单个页面（/work with us）重定向到netlify支持的网站，如下所示：

location /work-with-us {
    proxy_pass https://purple-rain.netlify.com;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection 'upgrade';
    proxy_set_header Host $host;
    proxy_cache_bypass $http_upgrade;
}

在添加此页面之前，我从Wordpress网站正确地接收到自定义404页面，因为旧网站上没有此页面。
添加了这个之后，我得到了一个带有“未找到”的nginx404页面