How to proxy web app with Nginx

I have a CentOS server which running Angular Web App on port 4200, and I want to access this web app with http://MY_SERVER . What should I do?

1. Install Nginx

$ sudo yum install nginx

2. Start Nginx

$ sudo systemctl start nginx

3. Enable Nginx

$ sudo systemctl enable nginx

4. Add HTTP/HTTPS Firewall

$ sudo firewall-cmd --permanent --zone=public --add-service=http 
$ sudo firewall-cmd --permanent --zone=public --add-service=https
$ sudo firewall-cmd --reload

5. Test Nginx

Open URL http://MY_SERVER, and I should see Nginx Welcome Page .

6. Add Proxy Pass to nginx.conf

server {
...
  listen       80 default_server;
  ...
  location / {
    proxy_pass http://127.0.0.1:4200;
  }
...
}

7. Restart Nginx

$ systemctl restart nginx

8. Test Proxy

Open URL http://MY_SERVER , and I should see my Angular Web App

Reference: https://nginx.org/en/docs/