<VirtualHost _default_:80>

    ServerName photos.mysubdomain.duckdns.org

   ProxyPreserveHost On
   ProxyPass / http://192.168.0.190:2342/
   ProxyPassReverse / http://192.168.0.190:2342/

RewriteEngine on
RewriteCond %{SERVER_NAME} =photos.mysubdomain.duckdns.org
RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,NE,R=permanent]
</VirtualHost>

# Listen 443

<VirtualHost _default_:443>

   SSLEngine On
   SSLProxyEngine On

    ServerName photos.mysubdomain.duckdns.org

   ProxyPreserveHost On
   ProxyPass / http://192.168.0.190:2342/
   ProxyPassReverse / http://192.168.0.190:2342/

SSLCertificateFile /etc/letsencrypt/live/photos.mysubdomain.duckdns.org/fullchain.pem
SSLCertificateKeyFile /etc/letsencrypt/live/photos.mysubdomain.duckdns.org/privkey.pem
Include /etc/letsencrypt/options-ssl-apache.conf
</VirtualHost>