Add Dockerfile and supervisord for PHP deployment

Dockerfile

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+FROM php:8.1-fpm
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    git \
+    curl \
+    libpng-dev \
+    libonig-dev \
+    libxml2-dev \
+    libzip-dev \
+    zip \
+    unzip \
+    nginx \
+    supervisor
+
+# Clear cache
+RUN apt-get clean && rm -rf /var/lib/apt/lists/*
+
+# Install PHP extensions
+RUN docker-php-ext-install pdo_mysql mbstring exif pcntl bcmath gd zip
+
+# Get latest Composer
+COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
+
+# Set working directory
+WORKDIR /var/www/html
+
+# Copy composer files
+COPY composer.json composer.lock ./
+
+# Install PHP dependencies
+RUN composer install --no-dev --optimize-autoloader
+
+# Copy application code
+COPY . .
+
+# Copy nginx configuration
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+# Expose port
+EXPOSE 80
+
+# Start supervisor
+CMD ["/usr/bin/supervisord", "-c", "/etc/supervisor/conf.d/supervisord.conf"]