Add Docker and Nginx configuration for Cloud Run deployment

cloudrun/Dockerfile.cloudrun

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+# Combined image for Cloud Run: nginx + php-fpm (PHP 5.6) for legacy Laravel 5
+# NOTE: PHP 5.6 is EOL; use only for legacy maintenance. Consider upgrading.
+
+FROM php:5.6-fpm
+
+# Set build args/env
+ARG APP_ENV=production
+ENV APP_ENV=${APP_ENV} \
+    APP_DEBUG=false \
+    OPCACHE_VALIDATE_TIMESTAMPS=0 \
+    COMPOSER_ALLOW_SUPERUSER=1 \
+    PORT=8080 \
+    PATH="/var/www/artisan:$PATH"
+
+WORKDIR /var/www
+
+# Install system deps (Debian variant easier than alpine for mixed services)
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
+    git curl unzip zip supervisor nginx \
+    libmcrypt4 libmcrypt-dev \
+    libpng-dev libjpeg62-turbo-dev libfreetype6-dev libzip-dev zlib1g-dev \
+ && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
+ && docker-php-ext-install gd mcrypt mbstring pdo pdo_mysql zip opcache \
+ && rm -rf /var/lib/apt/lists/*
+
+# Install Composer (v1)
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer \
+ && composer self-update --1
+
+# Copy composer files & install deps first (cache layer)
+COPY composer.* ./
+RUN composer config platform.php 5.6.40 \
+ && composer install --no-dev --no-scripts --no-autoloader --prefer-dist
+
+# Copy application code
+COPY . .
+RUN composer dump-autoload --optimize --no-dev --classmap-authoritative || true
+
+# Nginx config
+COPY cloudrun/nginx.conf /etc/nginx/nginx.conf
+
+# Supervisord config
+COPY cloudrun/supervisord.conf /etc/supervisor/conf.d/supervisord.conf
+
+# Remove default nginx site configs if present
+RUN rm -f /etc/nginx/sites-enabled/default /etc/nginx/conf.d/default.conf || true
+
+# Create runtime dirs
+RUN mkdir -p /run/php /var/log/supervisor /var/www/storage /var/www/bootstrap/cache \
+ && chown -R www-data:www-data /var/www/storage /var/www/bootstrap/cache
+
+# PHP production ini tweaks
+RUN { \
+  echo "opcache.enable=1"; \
+  echo "opcache.memory_consumption=128"; \
+  echo "opcache.interned_strings_buffer=8"; \
+  echo "opcache.max_accelerated_files=4000"; \
+  echo "opcache.revalidate_freq=60"; \
+  echo "opcache.fast_shutdown=1"; \
+  echo "date.timezone=UTC"; \
+} > /usr/local/etc/php/conf.d/zz-custom.ini
+
+# Generate app key if missing (non-fatal if artisan fails early)
+RUN php artisan key:generate || true
+
+# Cloud Run listens on $PORT
+EXPOSE 8080
+
+# Health check path suggestion: /healthz (configure in Cloud Run if desired)
+
+# Start supervisor (manages php-fpm + nginx)
+CMD ["/usr/bin/supervisord", "-c", "/etc/supervisor/conf.d/supervisord.conf"]