Added Dockerfile

Dockerfile

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+# Starting out with the openjdk-11-slim image
+FROM maven:3-openjdk-11-slim
+
+# Set working directory to /app
+WORKDIR /app
+
+# Update apt; install git and git-lfs 
+RUN apt-get update && apt-get -qq -y install git git-lfs
+
+# Clone the 2009scape repository
+RUN git clone --depth=1 https://gitlab.com/2009scape/2009scape.git
+
+# Fake it til you make it - let's go home
+WORKDIR /app/2009scape
+
+# Make sure ./run has permissions
+RUN chmod +x run
+
+# Run it
+CMD ["./run"]