throttled/Dockerfile

FROM rust:1.46-buster as sysstat

WORKDIR /sysstat
RUN git clone https://github.com/sysstat/sysstat /sysstat
RUN CFLAGS=-static ./configure && CFLAGS=-static make -j$(nproc)

RUN wc -c /sysstat/iostat | numfmt --to=iec-i

FROM rust:1.46-buster as build

# create dummy application for dependency caching
RUN USER=root cargo new --bin throttled
WORKDIR /throttled
COPY Cargo.lock Cargo.lock
COPY Cargo.toml Cargo.toml

RUN rustup toolchain install nightly

# download + compile dependencies for caching
RUN cargo +nightly build --release
RUN rm src/*.rs
RUN rm ./target/release/deps/throttled*

ADD src src

RUN cargo +nightly build --release

RUN wc -c target/release/throttled | numfmt --to=iec-i

# ------------------------------------------------------------------------------
# Final Stage
# ------------------------------------------------------------------------------

FROM amd64/busybox:uclibc as busybox
FROM gcr.io/distroless/cc:debug
COPY --from=busybox /bin/busybox /busybox/busybox
RUN ["/busybox/busybox", "--install", "/bin"]
# FROM gcr.io/distroless/cc:latest

COPY --from=build /throttled/target/release/throttled /usr/local/bin/throttled
COPY --from=sysstat /sysstat/iostat /sysstat/iostat

ENTRYPOINT ["/usr/local/bin/throttled"]