fix: switch to minimal PHP-CLI on port 8080 for testing

Dockerfile

@@ -1,17 +1,15 @@
-FROM php:8.3-apache
+FROM php:8.3-cli
 
-# Suppress ServerName warning
-RUN echo "ServerName localhost" >> /etc/apache2/apache2.conf
+# Copy the application files
+COPY . /app
+WORKDIR /app
 
-# Increase PHP limits for large code files
-RUN echo "memory_limit=512M" > /usr/local/etc/php/conf.d/custom.ini \
-    && echo "max_execution_time=300" >> /usr/local/etc/php/conf.d/custom.ini
+# Set permissions
+RUN chown -R www-data:www-data /app
 
-COPY . /var/www/html/
-RUN chown -R www-data:www-data /var/www/html
+# Expose port 8080
+EXPOSE 8080
 
-# Dynamically set the port to $PORT (defaulting to 80 if not set)
-# We use the shell form of CMD to ensure variable expansion
-CMD sed -i "s/Listen 80/Listen ${PORT:-80}/g" /etc/apache2/ports.conf && \
-    sed -i "s/<VirtualHost \*:80>/<VirtualHost *:${PORT:-80}>/g" /etc/apache2/sites-available/000-default.conf && \
-    apache2-foreground
+# Start the built-in PHP server on port 8080 (listening on all interfaces)
+# We use -t /app to set the document root
+CMD ["php", "-S", "0.0.0.0:8080", "-t", "/app"]