Dockerfile

# Leveraging the pre-built Docker images with
# cargo-chef and the Rust toolchain
FROM lukemathwalker/cargo-chef:latest-rust-1.75.0@sha256:486ca13b5d6ef4ad2ae21022be903487e502ea7f860bb5b7c8a0ee9a17dfa4c6 AS chef
WORKDIR /app

FROM chef AS planner
COPY . .
RUN cargo chef prepare --recipe-path recipe.json

FROM chef AS builder
COPY --from=planner /app/recipe.json recipe.json
# Build dependencies - this is the caching Docker layer!
RUN cargo chef cook --release --recipe-path recipe.json
# Build application
COPY . .
RUN cargo build --release --bin kubit

# We do not need the Rust toolchain to run the binary!
FROM debian:bookworm-slim@sha256:1537a6a1cbc4b4fd401da800ee9480207e7dc1f23560c21259f681db56768f63 AS runtime
RUN apt-get update && apt-get install -y \
    ca-certificates \
    && rm -rf /var/lib/apt/lists/*
WORKDIR /app
COPY --from=builder /app/target/release/kubit /usr/local/bin
ENTRYPOINT ["/usr/local/bin/kubit"]