FROM rust:1.80.0-alpine3.20 AS chef
USER root
# remove the line below when switching to >=rust:1.70.0. sparse mode is planned to be the default in Rust 1.70.0
# ENV CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse
RUN apk add --no-cache musl-dev & cargo install cargo-chef
WORKDIR /microservice-poc

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

FROM chef AS builder
COPY --from=planner /microservice-poc/recipe.json recipe.json
# Build dependencies - this is the caching Docker layer!
RUN cargo chef cook --release --recipe-path recipe.json
# Build application
RUN apk add --no-cache protoc
COPY . .
RUN cargo build --release --bin auth

# We do not need the Rust toolchain to run the binary!
FROM debian:buster-slim AS runtime
WORKDIR /microservice-poc
COPY --from=builder /microservice-poc/target/release/auth /usr/local/bin
ENTRYPOINT ["/usr/local/bin/auth"]