Add Dockerfile

docker/Dockerfile

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+FROM phusion/baseimage:0.10.1
+LABEL maintainer "[email protected]"
+
+RUN apt-get update && \
+	apt-get upgrade -y && \
+	apt-get install -y cmake pkg-config libssl-dev && \
+	curl https://sh.rustup.rs -sSf | sh && \
+	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
+
+WORKDIR /polkadot
+CMD ["/bin/sh", "polkadot"]

docker/build.sh

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+#!/bin/sh
+
+docker build -t polkadot:0.2 .