PHP deploy fails with composer not found when the shared PHP base is unavailable

Error recorded 1 times in PanelAlpha Engine deploys on Php. The deploy log below is the recorded failure output.

Seen1 times
WherePhp

Why it happens

The engine could not provide its own PHP base image for this deploy and fell back to the stock PHP image, which has no Composer, so installing the dependencies failed.

What the log looks like

Deploy log
[panelalpha] build: dependencies[panelalpha] composer plugins allowed: composer/installers, drupal/core-composer-scaffold, drupal/core-recipe-unpack, drupal/core-project-message, symfony/runtime; any other plugin is installed but not runsh: 3: composer: not found

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Requires Ubuntu 24.04 or 26.04 · 2 GB RAM · 1 CPURead the documentation