# Production Dockerfile (Multi-stage build)
# Stage 1: Build
FROM rust:1.93-slim AS builder

WORKDIR /app

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

# Copy Cargo files first for better caching
COPY Cargo.toml ./

# Create dummy main.rs for dependency caching
RUN mkdir src && echo 'fn main() {}' > src/main.rs

# Build dependencies (this layer will be cached)
RUN cargo build --release && rm -rf src

# Copy actual source code
COPY src ./src

# Build the actual application
RUN cargo build --release

# Stage 2: Runtime
FROM debian:bookworm-slim

WORKDIR /app

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

# Copy the binary from builder stage
COPY --from=builder /app/target/release/normogen-backend /usr/local/bin/normogen-backend

# Expose port
EXPOSE 8000

# Run the application
CMD ["./normogen-backend"]