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Re:AWS Certificate Manager: Deploy SSL/TLS-Based Apps on AWS by DanielDent on Thursday January 21, 2016 @04:52PM (#10948691)
I have an nginx Letsencrypt integration example which might be helpful to you:

https://github.com/DanielDent/docker-nginx-ssl-proxy

My solution is to simply include a self-signed dummy keypair that gets replaced by the letsencrypt keys when they get issued.

An alternative approach would be to remove the SSL listener entirely until the certificate is issued.

Re:AWS Certificate Manager: Deploy SSL/TLS-Based Apps on AWS by sandGorgon on Thursday January 21, 2016 @10:37PM (#10950594)
This is awesome. Thanks for packaging it!!

Does the DNS based validation make this better in any way?

Re:AWS Certificate Manager: Deploy SSL/TLS-Based Apps on AWS by DanielDent on Friday January 22, 2016 @04:26AM (#10951722)
You are welcome :). Glad you like it.

I assume you mean Let's Encrypt's newly announced DNS validation approach to issuance? I think that would only add unnecessary complexity here.

There are other setups where that will be nice to have, but I don't think this is one of them.