add php to the dockerfile

Dockerfile

@@ -9,6 +9,10 @@ ARG NODE_VERSION=20
 FROM node:${NODE_VERSION}-bookworm AS node_builder
 
 WORKDIR /var/www/html
+  # install PHP CLI for Wayfinder
+RUN apt-get update \
+   && apt-get install -y --no-install-recommends php-cli php-mbstring php-xml php-curl \
+   && rm -rf /var/lib/apt/lists/*
 
 COPY package.json package-lock.json ./
 RUN npm ci --no-audit --prefer-offline