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## The Issue - Fixes ddev#737 The legacy MySQL 5.5 guide pinned `ddev/ddev-dbserver-mysql-5.5:v1.24.6`, which can fail on restart with `Permission denied` when a custom `.ddev/mysql/*.cnf` is present. The pin also left the rest of the recipe stale: the entrypoint was patched by line number, so it only worked with that one image. ## How This PR Solves The Issue A `pre-start` hook derives the legacy image from `$DDEV_DBIMAGE`, so it always matches the installed DDEV version. That fixes the restart failure (DDEV v1.24.7+) and keeps working after upgrades. The entrypoint patches now match on patterns instead of line numbers. The rest updates the article for current DDEV: `x-ddev` keys label the services in `ddev describe`, `ddev ssh -s php -u devilbox` replaces a raw `docker exec`, and Step 2 is marked ARM64-only since AMD64 supports MySQL 5.5 directly. ## Manual Testing Instructions https://pr-738.ddev-com-fork-previews.pages.dev/blog/legacy-projects-with-unsupported-php-and-mysql-using-ddev/ Build the project from Steps 1 to 4 on Apple Silicon. `ddev mysql` should report `5.5.62-log`, `ddev restart` should not complain about a version mismatch, and `ddev ssh -s php -u devilbox` should land in a PHP 5.3 shell. ## Automated Testing Overview No tests needed, documentation-only change. ## Release/Deployment Notes No deployment changes are required. 🤖 Developed with assistance from [Claude Code](https://claude.ai/code) Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
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stasadev
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Sep 24, 2026
| args: | ||
| BASE_IMAGE: ddev/ddev-dbserver-mysql-5.5:v1.24.6 | ||
| BASE_IMAGE: ${DDEV_DB_LEGACY_IMAGE} | ||
| #image: ${DDEV_DB_LEGACY_IMAGE}-${DDEV_SITENAME}-built |
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The Issue
The legacy MySQL 5.5 guide pinned
ddev/ddev-dbserver-mysql-5.5:v1.24.6. With a custom.ddev/mysql/*.cnffile, restarting the DB container could fail withcp: cannot create regular file '/etc/mysql/conf.d/legacy.cnf': Permission denied. DDEV v1.24.7 fixed that. The rest of the recipe was also stuck on that one image, because the entrypoint was patched by line number.How This PR Solves The Issue
A
pre-starthook takes the legacy image name from$DDEV_DBIMAGE, so it always matches the installed DDEV version. That fixes the restart failure and keeps working after DDEV upgrades. The entrypoint patches now match on patterns, not line numbers. A customimagename stops the build from overwriting DDEV's ownddev-dbserver-mysql-8.0image.The article is also updated for current DDEV:
x-ddevkeys label the services inddev describe,ddev ssh -s php -u devilboxreplaces a rawdocker exec, and Step 2 is marked as needed only on ARM64, since AMD64 supports MySQL 5.5 directly.Manual Testing Instructions
https://pr-746.ddev-com-fork-previews.pages.dev/blog/legacy-projects-with-unsupported-php-and-mysql-using-ddev/
Build the project from Steps 1 to 4 on Apple Silicon.
ddev mysqlshould report5.5.62-log,ddev restartshould not complain about a version mismatch, andddev ssh -s php -u devilboxshould open a PHP 5.3 shell.Automated Testing Overview
No tests needed, documentation-only change.
Release/Deployment Notes
No deployment changes are required.
🤖 Developed with assistance from Claude Code