dh key too small when trying to use magento-cloud-docker-tls

[magento-engcom-team]

I had magento/magento-cloud-docker-tls:latest-1.1 container running for SSL offloading. When I used the "magento/magento-cloud-docker-php:7.4-fpm-1.1" container (Debian Buster) to curl https://tls.magento2.docker, I received the error below.

error:141A318A:SSL routines:tlsprocess_skedhe:dh key too small

To work around the issue, I had to remove "CipherString = DEFAULT@SECLEVEL=2" from the /etc/ssl/openssl.cnf file. I believe the SSL key might be too small in the Magento SSL certificate in the magento-cloud-docker-tls docker image.

[magento-engcom-team]

The issue was exported from the internal JIRA. The link to the original JIRA issue: https://jira.corp.magento.com/browse/MCLOUD-6469

[shiftedreality]

Done in #273