FROM rustlang/rust:nightly as builder
WORKDIR /app

# Cache dependencies
COPY Cargo.toml Cargo.lock ./
RUN mkdir src && echo "fn main() {}" > src/main.rs
RUN cargo build --release

# Build application
COPY . .
RUN cargo build --release

FROM debian:bookworm-slim as runtime
RUN apt-get update && apt-get install -y --no-install-recommends ca-certificates \
    && rm -rf /var/lib/apt/lists/*
WORKDIR /app
COPY --from=builder /app/target/release/api /usr/local/bin/api
ENV ROCKET_ADDRESS=0.0.0.0
ENV ROCKET_PORT=8080
EXPOSE 8080
CMD ["api"]