push-keys.md

+You need to add push gateway certificates, which you obtain from Google or Apple. We make use of their REST-API.
+
+We have mounted the credentials outside of docker /opt/pushgateway/RocketChatMobilePushGateway/credentials/ so we can easily access them.
+
+## Google Firebase
+
+to do 
+
+## Apple APN
+
+Get an Apple developer account ($ 99.- per year) and get a new push key at https://developer.apple.com/account/resources/authkeys/list
+
+Convert with `openssl pkcs8 -nocrypt -in AuthKey_YOURKEYID.p8 -out AuthKey.pem`
+