Dockerfile

FROM ruby:3.4.8-slim

# Set environment variables
ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
ENV PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD=1

# Install system dependencies
RUN apt-get update && apt-get install -y \
    curl \
    wget \
    gnupg \
    git \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

# Install Node.js (required for Playwright)
RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - \
    && apt-get install -y nodejs

# Set working directory
WORKDIR /app

# Copy Gemfile and Gemfile.lock first for better caching
COPY Gemfile Gemfile.lock ./

# Install Ruby gems
RUN bundle config set --local deployment 'true' \
    && bundle config set --local without 'development test' \
    && bundle install

# Install Playwright and browsers
RUN npm init -y \
    && npm install playwright@1.46.0 \
    && npx playwright install --with-deps chromium

# Create data directory and set permissions
RUN mkdir -p /app/data /app/data/thumbnails \
    && chmod 755 /app/data /app/data/thumbnails

# Copy application code
COPY . .

# Create a non-root user for security
RUN useradd --create-home --shell /bin/bash app \
    && chown -R app:app /app
USER app

# Expose port
EXPOSE 4567

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:4567/health || exit 1

# Start the application
CMD ["bundle", "exec", "puma", "-C", "config/puma.rb"]