build(docker): add Dockerfile and builder

Dockerfile

@@ -0,0 +1,33 @@
+# Leveraging the pre-built Docker images with
+# cargo-chef and the Rust toolchain
+FROM git.kemitix.net/kemitix/git-next-builder:latest AS builder
+WORKDIR /app
+
+COPY Cargo.toml Cargo.lock ./
+COPY src src
+RUN cargo chef prepare --recipe-path recipe.json
+
+ARG CARGO_PROFILE
+# Build dependencies - this is the caching Docker layer!
+RUN cargo chef cook --profile "$CARGO_PROFILE" --recipe-path recipe.json
+# Build application
+COPY Cargo.toml Cargo.lock ./
+COPY src src
+ARG CARGO_PROFILE
+RUN cargo build --profile "$CARGO_PROFILE" --bin git-next
+RUN if test "$CARGO_PROFILE" == "release" ; then strip target/release/git-next ; fi
+
+# We do not need the Rust toolchain to run the binary!
+FROM docker.io/debian:stable-20240211-slim AS runtime
+WORKDIR /app
+RUN apt-get update && \
+  apt-get install --no-install-recommends -y \
+    libssl3=3.0.11-1~deb12u2 \
+    ca-certificates=20230311 \
+    && \
+  rm -rf /var/lib/apt/lists/*
+USER 1000
+
+ARG CARGO_TARGET
+COPY --from=builder /app/target/"$CARGO_TARGET"/git-next /usr/local/bin
+ENTRYPOINT [ "/usr/local/bin/git-next" ]

Dockerfile.builder

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+FROM docker.io/rust:latest
+
+RUN apt-get update && \
+  apt-get install -y clang-15 mold && \
+  curl -L https://github.com/cargo-bins/cargo-binstall/releases/latest/download/cargo-binstall-x86_64-unknown-linux-musl.tgz -o cargo-binstall.tgz && \
+  tar -xzf cargo-binstall.tgz && \
+  rm cargo-binstall.tgz && \
+  mv cargo-binstall /usr/local/bin/ && \
+  cargo binstall -y cargo-chef && \
+  rustup component add rustfmt clippy
+
+# verify that the binaries are installed
+RUN ls -l /usr/local/cargo/bin/
+RUN cargo chef --version
+RUN rustfmt --version
+RUN cargo fmt --version
+RUN cargo clippy --version
+RUN mold --version
+RUN clang-15 --version
+RUN cargo --version
+RUN rustc --version
+RUN rustup --version
+RUN rustup show