Port Dockerfile from monorepo

Dockerfile

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+FROM mono:5.4
+EXPOSE 6702
+
+ARG DMP=0.3.6.0
+
+# add our users and groups first to make sure their IDs get assigned consitently
+RUN useradd -d /home/dmp dmp
+
+RUN apt-get -yqq update && apt-get -y install unzip
+
+ADD https://d-mp.org/builds/release/v$DMP/DMPServer.zip /home/dmp/DMPServer.zip
+
+WORKDIR /home/dmp
+RUN unzip DMPServer.zip
+WORKDIR /home/dmp/DMPServer
+
+RUN chown dmp:dmp /home/dmp -R
+USER dmp
+
+CMD mono DMPServer.exe
+

README.md

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+## KSP DarkMP
+KSP DarkMP is a multiplayer mod for KSP. This image is the server.
+
+### Building ksp-darkmp
+
+```
+docker build -t zombi/ksp-darkmp .
+```
+
+### Running ksp-darkmp
+
+```
+docker run -d \
+ --name ksp-darkmp \
+ -v /data/ksp/:/home/dmp/DMPServer/Config \
+ -p 6702:6702
+ zombi/ksp-darkmp
+```
+
+