# This is a multi-stage build, see
# https://vsupalov.com/cache-docker-build-dependencies-without-volume-mounting/

FROM debian:stretch as intermediate

ARG SDKINSTALLER

RUN apt-get update && \
  apt-get install --no-install-recommends -y build-essential xz-utils python3 file

# copy from filesystem, polutes image layers but only for intermediate image
RUN mkdir -p /deploy/sdk
ADD ${SDKINSTALLER} /deploy/sdk/sdk.sh
# do install
RUN /deploy/sdk/sdk.sh -y -d /sdk


# copy extracted SDK from intermediate, without tgz polution
FROM debian:stretch
COPY --from=intermediate /sdk /sdk