Add docker image

docker/Makefile

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+IMG_ORG ?= projectserum
+IMG_VER ?= latest
+
+WORKDIR=$(PWD)
+
+.PHONY: development development-push development-shell
+
+default:
+
+development: development/Dockerfile
+	@docker build $@ -t $(IMG_ORG)/$@:$(IMG_VER)
+
+development-push:
+	@docker push $(IMG_ORG)/development:$(IMG_VER)
+
+development-shell:
+	@docker run -ti --rm \
+		-v $(WORKDIR)/..:/workdir \
+		$(IMG_ORG)/development:$(IMG_VER) bash

docker/README.md

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+# Docker
+
+A development docker image is used in CI to build and test the project.
+
+## Development
+
+To build the development image run
+
+```
+make development
+```
+
+To push to dockerhub, assuming you have push access, run
+
+```
+make development-push
+```
+
+To run the development image locally (if you don't want to install all the
+dependencies yourself), run
+
+```
+make development-shell
+```

docker/development/Dockerfile

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+FROM ubuntu:18.04
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+ARG SOLANA_CHANNEL=v1.2.17
+
+# Install base utilities.
+RUN mkdir -p /workdir && mkdir -p /tmp && \
+    apt-get update -qq && apt-get upgrade -qq && apt-get install -qq \
+    build-essential git curl
+
+ENV HOME="/root"
+ENV PATH="${HOME}/.cargo/bin:${PATH}"
+
+# Install rust.
+RUN curl "https://sh.rustup.rs" -sfo rustup.sh && \
+    sh rustup.sh -y && \
+    rustup component add rustfmt clippy
+
+# Install Solana tools.
+RUN curl -L --retry 5 --retry-delay 2 -o bpf-sdk.tar.bz2 http://solana-sdk.s3.amazonaws.com/${SOLANA_CHANNEL}/bpf-sdk.tar.bz2 && \
+  rm -rf bpf-sdk && \
+  mkdir -p bpf-sdk && \
+  tar jxf bpf-sdk.tar.bz2 && \
+  rm -f bpf-sdk.tar.bz2
+
+WORKDIR /workdir