FROM mcr.microsoft.com/devcontainers/php:8.3 # Install Node.js for actions/checkout@v4 post-step compatibility # This is a Node.js 20 action and its post-step runs inside the container RUN apt-get update && \ apt-get install -y --no-install-recommends nodejs && \ rm -rf /var/lib/apt/lists/* # Verify node is available (required for JavaScript actions via act) RUN node --version