GD JPEG support

[NoelLH]

Hi, I noticed some of the most recent changes target sorting out JPEG support for the GD extension, but I've noticed that using cespi/php-5.3:modules-apache-latest as published to Docker Hub, I seem to currently get a version without JPEG support.

Is there a known issue with that tag or something else we should do to enable this feature? The Dockerfile itself seems to include the commands to build with a viable-looking jpeg-dir and I can see GD itself is definitely enabled.

[chrodriguez]

Can you post a sample php code to test?

[NoelLH]

Hi @chrodriguez, I'm afraid we've now upgraded to PHP 5.6, but I was confirming this was the issue simply with phpinfo() - the JPEG section didn't appear under the GD extension's info, whereas when compiled successfully with JPEG support it does. In real code this just manifests as functions like imagejpeg() being undefined.