# Stage 1: Build dependency cache and compile application
FROM rust:1.95-bookworm AS builder

RUN apt-get update && apt-get install -y pkg-config libssl-dev && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Create dummy source files for caching build dependencies
COPY Cargo.toml Cargo.lock ./
RUN mkdir src && echo "fn main() {}" > src/main.rs && touch src/lib.rs
RUN cargo build --release

# Copy actual source files
COPY src ./src
# Touch files to force rebuild with real source
RUN touch src/main.rs src/lib.rs
RUN cargo build --release

# Stage 2: Minimal runtime image
FROM debian:bookworm-slim

RUN apt-get update && apt-get install -y ca-certificates openssl && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Copy the built binary
COPY --from=builder /app/target/release/tradesync /app/tradesync

CMD ["/app/tradesync"]