Add docker image (#375)

* Add Dockerfile

Add documentation

Ref #375

* Add PORT, VOLUME and reduce size of the docker image significantly

Fix doc and reduce image size

Fix #375

* Fix docker compose

substrate/docker/Dockerfile

@@ -0,0 +1,33 @@
+FROM phusion/baseimage:0.10.1
+LABEL maintainer "chevdor@gmail.com"
+
+ARG PROFILE=release
+
+RUN mkdir -p polkadot && \
+	apt-get update && \
+	apt-get upgrade -y && \
+	apt-get install -y cmake pkg-config libssl-dev git && \
+	apt-get clean && \
+	mkdir -p /root/.local/share/Polkadot && \
+	ln -s /root/.local/share/Polkadot /data
+
+RUN curl https://sh.rustup.rs -sSf | sh -s -- -y && \
+	export PATH=$PATH:$HOME/.cargo/bin && \
+	rustup update nightly && \
+	rustup target add wasm32-unknown-unknown --toolchain nightly && \
+	rustup update stable && \
+	cargo install --git https://github.com/alexcrichton/wasm-gc && \
+	git clone https://github.com/paritytech/polkadot.git && \
+	cd polkadot && \
+	./build.sh && \
+	cargo build --$PROFILE && \
+	mv target/$PROFILE/polkadot /usr/local/bin && \
+	cargo clean && \
+	rm -rf /root/.cargo /root/.rustup /tmp/*
+
+COPY version /polkadot
+WORKDIR /polkadot
+EXPOSE 30333 9933
+VOLUME ["/data"]
+
+CMD ["/bin/sh", "polkadot"]