fix: add memory_limit and LimitRequestBody for big file upload support

[DeepDiver1975]

Summary

Two related gaps in big file upload support surfaced by owncloud/core#41611:

• memory_limit not set in Docker: owncloud.ini.tmpl sets upload_max_filesize and post_max_size via OWNCLOUD_MAX_UPLOAD, but memory_limit was absent. For v24.04 (PHP 8.3 + mod_php8), the .htaccess <IfModule mod_php7.c> block doesn't fire, so PHP falls back to its compiled-in default of 128M instead of the intended 512M. For v22.04 (PHP 7.4), the .htaccess block does fire, but having it in the ini is more explicit and Docker-idiomatic.

• LimitRequestBody not explicit: apache.conf.tmpl had no LimitRequestBody directive. Apache 2.4's default is 0 (unlimited) for regular files, but some Ubuntu builds/configs cap it at 1 GiB. Setting it explicitly to 0 ensures unlimited request body size regardless of distro defaults.

Changes

File	Change
v22.04/overlay/etc/templates/owncloud.ini.tmpl	Add memory_limit = "{{ .Env.OWNCLOUD_MEMORY_LIMIT }}"
v24.04/overlay/etc/templates/owncloud.ini.tmpl	Same
v22.04/overlay/etc/templates/apache.conf.tmpl	Add LimitRequestBody 0 inside <Directory> block
v24.04/overlay/etc/templates/apache.conf.tmpl	Same
v22.04/overlay/etc/entrypoint.d/10-base.sh	Add OWNCLOUD_MEMORY_LIMIT default 512M
v24.04/overlay/etc/entrypoint.d/10-base.sh	Same

Note: OWNCLOUD_MEMORY_LIMIT is not yet documented in ENVIRONMENT.md — that can be addressed in a follow-up.

[DeepDiver1975]

Adds OWNCLOUD_MEMORY_LIMIT (default 512M) to both v22.04 and v24.04 images, sets it in the PHP ini template, and adds LimitRequestBody 0 to the Apache vhost config. Changes are applied symmetrically across both version directories.

The fix is correct and well-targeted. A few notes:

LimitRequestBody 0: Setting this to 0 (unlimited) in the <Directory> block is the right approach for an ownCloud upload-focused image. Just be aware this applies to the entire document root — if any application code is served under the same vhost that should have request size limits, this would remove them. For a dedicated ownCloud container this is a non-issue.

memory_limit in ini vs .htaccess: The Docker-idiomatic approach (PHP ini) is correct here and avoids the mod_php8 module-name dependency. The companion owncloud/core#41612 adds the .htaccess block for non-Docker Apache installs.

ENVIRONMENT.md gap: The PR description notes OWNCLOUD_MEMORY_LIMIT is not yet documented. Worth a follow-up PR or adding it here — undocumented env vars in Docker images tend to stay undiscovered.

Symmetric v22.04/v24.04 changes: Both versions are updated identically, which is correct.

Safe to merge once CI passes.

[DeepDiver1975]

I need to review this first if this is needed ....