Hey folks,

tl;dr: We're splitting PHP & HTTP containers in the MediaWiki-Docker[0] development environment. If you're not currently using MediaWiki-Docker, you can safely ignore this message.

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We're planning to merge a change to the MediaWiki-Docker environment to split PHP-FPM into a separate container from Apache.[1]

This should improve build efficiency for these images, and remove the need to duplicate so much stuff (Apache, etc.) between versions of PHP. It also unblocks support for PHP 7.3/7.4, and upgrades XDebug to the 3.x series.

What you'll need to change in existing setups:

In docker-compose-override.yaml:

* Linux users should specify a MW_DOCKER_UID & MW_DOCKER_GID for all containers.

In .env:

* Set XDEBUG_ENABLE=true and XHPROF_ENABLE=true if you want the corresponding extensions turned on.

* If you have an XDEBUG_CONFIG set, it may need updated to reflect new configuration value names.[2]

Finally, I'd like to get it out the door this week, since it unblocks a number of requested improvements, but feedback is of course welcome in Gerrit.[1]

[0]. https://www.mediawiki.org/wiki/MediaWiki-Docker [1]. https://gerrit.wikimedia.org/r/c/mediawiki/core/+/630988 [2]. https://xdebug.org/docs/upgrade_guide

Thanks!