mail-receiverの変数はどこに置けばいいですか？

[pfaffman (Jay Pfaffman)]

@Bathinda

Can you pls tell from where I can copy the above said variables of my site?

You need a third container as descibed below this:

@tobiaseigen

Now, go to your /var/discourse directory and create a new mail-receiver.yml container definition from the sample conveniently provided: