Fix FrankenPHP Docker example and add local dev tip#8177
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- Replace WORKDIR with SERVER_ROOT env var to correctly set FrankenPHP's document root to /app/webroot (default is /app/public) - Fix composer install running in wrong directory (webroot/ instead of /app) - Add tip about bin/cake server --frankenphp for local development
josbeir
approved these changes
Jan 28, 2026
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Summary
WORKDIR /app/webrootwithENV SERVER_ROOT=/app/webrootin the Dockerfile example. FrankenPHP's default document root is/app/public, andWORKDIRonly changes the working directory for subsequent Docker commands — it does not change the server's document root. CakePHP useswebroot/instead ofpublic/, so theSERVER_ROOTenvironment variable is needed.composer installwhich previously ran inwebroot/(due to WORKDIR) but needs to run in/appwherecomposer.jsonlives. Removing WORKDIR fixes this since the default is/app.bin/cake server --frankenphpfor local development (available since CakePHP 5.3).