Rust Rocket Docker slim

Dockerfile

FROM rustlang/rust:nightly-slim

WORKDIR /app
COPY ./ /app

RUN set -ex; \ 
  apt-get update; \
  apt-get install -y --no-install-recommends \
  pkg-config \
  libssl-dev

RUN cargo build --release

# match nightly slim
FROM debian:buster-slim
WORKDIR /app
COPY --from=0 /app/target/release/rocket-webhook .
RUN set -ex; \ 
  apt-get update; \
  apt-get install -y --no-install-recommends \
  libssl-dev
CMD ["/app/rocket-webhook"]