# Use official Ruby image
FROM docker.io/library/ruby:3.4-slim

# Set working directory
WORKDIR /app

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

# Copy Gemfile and Gemfile.lock
COPY Gemfile* ./

# Install Ruby gems
RUN bundle install --without development

# Copy responses file first
COPY responses.yml ./

# Copy application code
COPY . .

# Create non-root user
RUN groupadd -r appuser && useradd -r -g appuser appuser
RUN chown -R appuser:appuser /app
USER appuser

# 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

# Default command
CMD ["ruby", "app.rb"]