Switch CI to bare-metal Nextcloud with PostgreSQL#28

Draft

bigcat88 wants to merge 12 commits intomainfrom

feature/ci-bare-metal-pgsql

Commits on Mar 29, 2026

Switch CI to bare-metal Nextcloud with PostgreSQL for faster tests
bigcat88
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Fix memcache.local escaping and spreed branch name for master
bigcat88
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Add composer install for NC apps that need vendor/autoload.php
bigcat88
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Fix mail tests for bare-metal CI, rename apps-branch, separate app checkout steps
bigcat88
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Switch from php -S to native PHP-FPM + nginx for proper production-like performance
bigcat88
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Move FPM and nginx configs to separate files, clean up workflow
bigcat88
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Add detailed error diagnostics for FPM/nginx debugging
bigcat88
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Fix nginx permission denied (chmod o+x home), cache pip dependencies
bigcat88
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Set NC loglevel to WARNING (2) instead of DEBUG (0) to reduce disk I/O
bigcat88
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Remove broken autoloader optimization, keep loglevel=2
bigcat88
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Diagnose and fix FPM OPcache: copy CLI ini overrides to FPM conf.d
bigcat88
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Remove broken OPcache diagnostic (already correct), disable file locking for CI
bigcat88
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