Configure proxy vhosts

You need to create a vhosts configurations

sudo nano /etc/apache2/sites-available/pwa-app.conf

and then paste these configurations.

<VirtualHost *:443>
 ServerName my-pwa.com #(links to pwa project root folder)
 ServerAlias my-pwa.com #(links to pwa project root folder)
 ProxyPreserveHost On
 ProxyRequests Off
 ProxyPass /https://my-pwa-hcxix.com:9000/ #your upward url
 ProxyPassReverse /https://my-pwa-hcxix.com.pwadev:9000/ #your upward url
 SSLProxyEngine on
 SSLProxyVerify none
 SSLProxyCheckPeerCN off
 SSLProxyCheckPeerName off
 SSLProxyCheckPeerExpire off
 SSLEngine on
 SSLCertificateFile /path/to/key.crt
 SSLCertificateKeyFile /path/to/key.key
</VirtualHost>

Start the server

sudo yarn build
sudo yarn start & # using & runs in background

Your magento 2 pwa app now should be accessible by this url
my-pwa.com

Additional notes

You might need to run this command first in your pwa root folder to acquire custom hostname, ssl, development and staging port for your app.

yarn run buildpack create-custom-origin .