initial

Containerfile

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+# Use official Ruby image
+FROM ruby:3.2-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 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"]