Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: docker/login-action@v3, docker/setup-buildx-action@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

InvalidDefaultArgInFrom: Default value for ARG php:${PHP_VERSION}-alpine results in empty or invalid base image name More info: https://docs.docker.com/go/dockerfile/rule/invalid-default-arg-in-from/