Dockerfile to create a Sia container

Dockerfile

FROM debian:jessie-slim

ENV SIA_VERSION 1.3.0
ENV SIA_PACKAGE Sia-v$SIA_VERSION-linux-amd64
ENV SIA_ZIP ${SIA_PACKAGE}.zip
# Choose a binary release of Sia.
ENV SIA_RELEASE https://github.com/NebulousLabs/Sia/releases/download/v$SIA_VERSION/$SIA_ZIP
# Choose the directory within the container where Docker will place Sia.
ENV SIA_DIR /opt/$SIA_PACKAGE

RUN apt-get update && apt-get install -y \
  socat \
  wget \
  unzip

# Download and install Sia.
RUN wget $SIA_RELEASE
RUN unzip $SIA_ZIP -d /opt

# Make the Sia ports available to the Docker container's host.
EXPOSE 8000 9981 9982

# Configure the Sia daemon to run when the container starts.
# Forward 8000 to localhost:9980 so it's accessible outside the container.
# Specify the Sia directory as /mnt/sia so that you can view these files outside
# of Docker.
WORKDIR $SIA_DIR
ENTRYPOINT socat tcp-listen:8000,reuseaddr,fork tcp:localhost:9980 & ./siad --modules gctwhr --sia-directory /mnt/sia