NTP-Timeturner/Dockerfile

# Multi-stage build for Rust Linux container
FROM rust:1.82-bookworm AS builder

# Build dependencies (libudev for serialport on Linux)
RUN apt-get update && apt-get install -y --no-install-recommends \
    pkg-config \
    libudev-dev \
    build-essential \
    ca-certificates \
    tzdata \
 && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Leverage docker layer caching for dependencies
COPY Cargo.toml Cargo.lock ./
RUN mkdir -p src && echo 'fn main() { println!("cargo:rerun-if-changed=build.rs"); }' > src/main.rs
RUN cargo build --release || true
RUN rm -rf src

# Copy full source and build real binaries
COPY . .
RUN cargo build --release --bin ntp_timeturner --bin ptp_probe

# Runtime image
FROM debian:bookworm-slim AS runtime

RUN apt-get update && apt-get install -y --no-install-recommends \
    libudev1 \
    ca-certificates \
    tzdata \
 && rm -rf /var/lib/apt/lists/*

WORKDIR /app

COPY --from=builder /app/target/release/ntp_timeturner /usr/local/bin/ntp_timeturner
COPY --from=builder /app/target/release/ptp_probe /usr/local/bin/ptp_probe
COPY static ./static

ENV RUST_LOG=info
EXPOSE 8080

# Default to running the main server
CMD ["ntp_timeturner"]