Docker build issue pecl

[AceOfHobbes]

WARNING: channel "pecl.php.net" has updated its protocols, use "pecl channel-update pecl.php.net" to update
pecl/sqlsrv requires PHP (version >= 7.3.0), installed version is 7.2.3
No valid packages found
install failed

If I update the version to 7.4 (errors with 7,3) there are additional issues.

Is there a Dockerfile for php 7.4?

[dev-roth]

I have the same issue. Apparently the project is not that active any more, because the issue raised by @AceOfHobbes is already 1/2 year old without any support or answer...