TYPO3 Core

The cooperation with the libressl binary seems to be the problem, not the php extension.

libressl installs a binary also called openssl.

I workaround this atm by removing the .persistent-deps and install them again with openssl.

https://github.com/t3easy/docker-php/blob/master/7.2/Dockerfile#L3-L10

Seems like the default config of openssl and libressl are different.
Copy over the openssl.cnf from openssl seems to work. I'll check some more...

OK, problem is the openssl.cnf from libressl has not set:

default_bits        = 2048
default_md        = sha256

What about to return openssl_error_string there: https://github.com/TYPO3/TYPO3.CMS/blob/05e4d107bac8ea6bbdb550c667d2480347feb2ba/typo3/sysext/install/Classes/SystemEnvironment/Check.php#L532
http://php.net/openssl_error_string

I've opened a bug in the php image
https://github.com/docker-library/php/issues/569

Maybe TYPO3 should not depend on the default_ openssl settings but add them to FactoryConfiguration?

Patch set 2 for branch 9.5 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/62945