Dockerfile

# syntax=docker/dockerfile:1

# https://docs.docker.com/engine/reference/builder/

################################################################################
# Create a stage for building the application.

ARG RUST_VERSION=1.75.0
FROM rust:${RUST_VERSION}-slim-bullseye AS build
WORKDIR /app

RUN apt-get update && apt-get install --no-install-recommends --assume-yes build-essential llvm-dev libclang-dev clang libpcre3 libpcre3-dev zlib1g-dev pkg-config libssl-dev

# Build the application.
# Leverage a cache mount to /usr/local/cargo/registry/
# for downloaded dependencies and a cache mount to /app/target/ for 
# compiled dependencies which will speed up subsequent builds.
# Leverage a bind mount to the src directory to avoid having to copy the
# source code into the container. Once built, copy the executable to an
# output directory before the cache mounted /app/target is unmounted.
RUN --mount=type=bind,source=src,target=src \
    --mount=type=bind,source=build.rs,target=build.rs \
    --mount=type=bind,source=DataAvailabilityChallenge.json,target=DataAvailabilityChallenge.json \
    --mount=type=bind,source=Cargo.toml,target=Cargo.toml \
    --mount=type=bind,source=Cargo.lock,target=Cargo.lock \
    --mount=type=cache,target=/app/target/ \
    --mount=type=cache,target=/usr/local/cargo/registry/ \
    <<EOF
set -e
cargo build -p sentinel --locked --release
cp ./target/release/sentinel /bin/sentinel
EOF

################################################################################
# Create a stage for running the application.

FROM debian:bullseye-slim AS final

RUN apt-get update && apt-get install -y libssl-dev ca-certificates

# Copy the executable from the "build" stage.
COPY --from=build /bin/sentinel /bin/

CMD ["/bin/sentinel"]