Add README

README.md

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+# docker-erlang
+
+Dockerized erlang environments
+
+## What is it?
+
+Docker container images that include
+[Erlang/OTP](http://www.erlang.org/), along with the
+[rebar](https://github.com/rebar/rebar) and
+[relx](https://github.com/erlware/relx) build and release tools.
+
+The latest versions of Erlang/OTP R15, R16 and 17 are provided as
+tags.
+
+## What can I use it for?
+
+Use it to try out the erlang shell, as an erlang development
+environment, or use it as a base image for your own erlang
+applications.
+
+## Usage
+
+*   Start a throwaway instance of the erlang shell
+
+        docker run -it --rm correl/erlang:R17
+
+*   Run a container to use a development environment
+
+        docker run -it --name erlang-dev correl/erlang:R17 /bin/bash