FROM rust:1.78-slim-bookworm AS builder
WORKDIR /app
RUN apt-get update && apt-get install -y pkg-config libssl-dev && rm -rf /var/lib/apt/lists/*
COPY Cargo.toml Cargo.lock* ./
RUN mkdir src && echo "fn main() {}" > src/main.rs
RUN cargo build --release 2>/dev/null || true
COPY src/ src/
RUN cargo build --release

FROM debian:bookworm-slim
RUN apt-get update && apt-get install -y ca-certificates libssl3 && rm -rf /var/lib/apt/lists/*
COPY --from=builder /app/target/release/failover-agent /usr/local/bin/failover-agent
ENTRYPOINT ["/usr/local/bin/failover-agent"]