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+# What is Erlang?
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+
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+Erlang is a programming language used to build massively scalable soft real-time systems with requirements on high availability. Some of its uses are in telecoms, banking, e-commerce, computer telephony and instant messaging. Erlang's runtime system has built-in support for concurrency, distribution and fault tolerance.
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+
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+> [wikipedia.org/wiki/Erlang_(programming_language)](https://en.wikipedia.org/wiki/Erlang_%28programming_language%29)
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+
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+%%LOGO%%
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+
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+# How to use this image
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+
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+## Run it as the REPL
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+
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+```console
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+➸ docker run -it --rm erlang
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+Erlang/OTP 18 [erts-7.1] [source] [64-bit] [smp:8:8] [async-threads:10] [hipe] [kernel-poll:false]
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+
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+Eshell V7.1 (abort with ^G)
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+1> uptime().
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+3 seconds
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+ok
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+2> % use Ctrl+G to call the shell switch
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+User switch command
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+ --> ?
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+ c [nn] - connect to job
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+ i [nn] - interrupt job
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+ k [nn] - kill job
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+ j - list all jobs
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+ s [shell] - start local shell
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+ r [node [shell]] - start remote shell
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+ q - quit erlang
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+ ? | h - this message
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+ --> q
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+➸ docker run -it --rm -h erlang.local erlang erl -name [email protected]
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+Erlang/OTP 18 [erts-7.1] [source] [64-bit] [smp:8:8] [async-threads:10] [hipe] [kernel-poll:false]
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+
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+Eshell V7.1 (abort with ^G)
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+([email protected])1> erlang:system_info(otp_release).
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+"18"
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+([email protected])2>
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+User switch command
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+--> q
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+```
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+
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+## Run a single Erlang escript
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+
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+```console
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+$ docker run -it --rm --name %%REPO%%-inst1 -v "$PWD":/usr/src/myapp -w /usr/src/myapp %%REPO%% escript your-escript.erl
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+```
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Derek
