content: FROM debian:stretch-slim
  
  # metadata
  ARG VCS_REF
  ARG BUILD_DATE
  
  LABEL io.parity.image.authors="devops-team@parity.io" \
  	io.parity.image.vendor="Parity Technologies" \
  	io.parity.image.title="parity/substrate" \
  	io.parity.image.description="Substrate: The platform for blockchain innovators." \
  	io.parity.image.source="https://github.com/paritytech/substrate/blob/${VCS_REF}/.maintain/docker/Dockerfile" \
  	io.parity.image.revision="${VCS_REF}" \
  	io.parity.image.created="${BUILD_DATE}" \
  	io.parity.image.documentation="https://wiki.parity.io/Parity-Substrate"
  
  # show backtraces
  ENV RUST_BACKTRACE 1
  
  # install tools and dependencies
  RUN apt-get update && \
  	DEBIAN_FRONTEND=noninteractive apt-get upgrade -y && \
  	DEBIAN_FRONTEND=noninteractive apt-get install -y \
  		libssl1.1 \
  		ca-certificates \
  		curl && \
  # apt cleanup
  	apt-get autoremove -y && \
  	apt-get clean && \
  	find /var/lib/apt/lists/ -type f -not -name lock -delete; \
  # add user
  	useradd -m -u 1000 -U -s /bin/sh -d /substrate substrate
  
  # add substrate binary to docker image
  COPY ./substrate /usr/local/bin
  
  USER substrate
  
  # check if executable works in this container
  RUN /usr/local/bin/substrate --version
  
  EXPOSE 30333 9933 9944
  VOLUME ["/substrate"]
  
  ENTRYPOINT ["/usr/local/bin/substrate"]
  
  