Push notifications options

We would like to use push notifications to iPhone with our Mattermost installation.

However, there might be sensitive information so we are considering our options.
https://docs.mattermost.com/deploy/mobile-faq.html#what-are-my-options-for-securing-push-notifications

We are with Team Edition for now. Otherwise, the Full message content fetched from the server on receipt would be ideal.

The option to go with a self-hosted push-proxy service is not entirely clear to me when reading the the FAQ.

Can we use a self-hosted push-proxy without:

  1. compiling the push-proxy,
  2. our own Apple keys
  3. creating our own iOS app?

That is, simply just install the self-hosted push-proxy using helm chart and then enter its URL in System Console.

BR,
Jimisola