Dockerfile

# HFT Voter Registry System - Docker Configuration

# Multi-stage build for production-ready image
FROM ubuntu:22.04 AS builder

# Install build dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    cmake \
    libssl-dev \
    pkg-config \
    git \
    && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Copy source code
COPY . .

# Build the project
RUN chmod +x build.sh && ./build.sh --build

# Production stage
FROM ubuntu:22.04 AS production

# Install runtime dependencies
RUN apt-get update && apt-get install -y \
    libssl3 \
    && rm -rf /var/lib/apt/lists/*

# Create non-root user
RUN useradd -m -s /bin/bash hftuser

# Set working directory
WORKDIR /app

# Copy built executable and dependencies
COPY --from=builder /app/build/HFTVoterRegistry /app/
COPY --from=builder /app/config/ /app/config/
COPY --from=builder /app/docs/ /app/docs/

# Set permissions
RUN chown -R hftuser:hftuser /app
USER hftuser

# Expose port
EXPOSE 8080

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8080/api/v1/health || exit 1

# Run the application
CMD ["./HFTVoterRegistry", "--api-server"]