Add Mono yolk

Mono/Dockerfile

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+FROM mono
+ENV DEBIAN_FRONTEND=noninteractive \
+    HOME=/home/container \
+    USER=container
+COPY entrypoint.sh /entrypoint.sh
+WORKDIR ${HOME}
+RUN apt-get update && apt-get upgrade -y && apt-get install -y --no-install-recommends iproute2 && \
+    useradd ${USER} -d ${HOME} && \
+    rm -rf /var/lib/apt/lists/*
+USER ${USER}
+ENTRYPOINT ["/bin/bash", "/entrypoint.sh"]

Mono/entrypoint.sh

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+#!/bin/bash
+cd $HOME
+
+# Make internal Docker IP address available to processes.
+export INTERNAL_IP=`ip route get 1 | awk '{print $NF;exit}'`
+
+# Replace Startup Variables
+MODIFIED_STARTUP=`eval echo $(echo ${STARTUP} | sed -e 's/{{/${/g' -e 's/}}/}/g')`
+echo ":${HOME}$ ${MODIFIED_STARTUP}"
+
+# Run the Server
+${MODIFIED_STARTUP}