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Support tls 1.2 in mattermost-docker

Hi,

I am using mattermost-docker latest version. I want to config tls 1.2 for web container. Currently my mattermost instance supports TLS 1.0 and TLS 1.1. Grade limit to B.

…/volumes/web/cert

cert.pem
chain.pem
fullchain.pem
key-no-password.pem

The certifying authority is Let’s encrypt.

How to config to support also tls 1.2 and obtain Grade A?

Thanks