add mysql-proxy

mysql-proxy/Dockerfile

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+#
+# Dockerfile for mysql-proxy
+#
+
+FROM debian:jessie
+MAINTAINER kev <noreply@easypi.info>
+
+RUN set -xe \
+    && apt-get update \
+    && apt-get install -y mysql-proxy \
+    && rm -rf /var/lib/apt/lists/*
+
+EXPOSE 4040
+
+ENTRYPOINT ["mysql-proxy"]
+CMD ["--help"]

mysql-proxy/README.md

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+mysql-proxy
+===========
+
+[MySQL Proxy][1] is an application that communicates over the network using the
+MySQL client/server protocol and provides communication between one or more
+MySQL servers and one or more MySQL clients.
+
+[1]: https://github.com/mysql/mysql-proxy

mysql-proxy/code.lua

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+function read_query(packet)
+    if packet:byte() == proxy.COM_QUERY then
+        print("we got a normal query: " .. packet:sub(2))
+    end
+end

mysql-proxy/docker-compose.yml

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+mysql-proxy:
+  image: vimagick/mysql-proxy
+  command: >
+    --proxy-address=:4040
+    --proxy-backend-addresses=mysql-server:3306
+    --proxy-lua-script=/code.lua
+  ports:
+    - "3306:4040"
+  volumes:
+    - ./code.lua:/code.lua
+  restart: always