build(docker): enhance Docker setup with proper dependencies and structure

- Add comprehensive .dockerignore file to exclude unnecessary files
- Update Dockerfile to install required system dependencies and PHP extensions
- Set proper working directory and user permissions
- Use multi-stage build for Composer installation

Dockerfile

@@ -1,6 +1,35 @@
 FROM php:8.4-fpm
 
-COPY . /app
-WORKDIR /app
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    git \
+    curl \
+    libpng-dev \
+    libonig-dev \
+    libxml2-dev \
+    zip \
+    unzip \
+    libzip-dev \
+    libicu-dev
 
+# 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 intl
+
+# Get latest Composer
+COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
+
+# Set working directory
+WORKDIR /var/www
+
+# Copy existing application directory contents
+COPY --chown=www-data:www-data . /var/www
+
+# Change current user to www
+USER www-data
+
+# Expose port 8000 and start php-fpm server
+EXPOSE 8000
 CMD ["php", "artisan", "serve", "--host=0.0.0.0", "--port=8000"]