Added Dockerfile and entrypoint to work with Zulu on Debian

Dockerfile

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+# ----------------------------------
+# Pterodactyl Core Dockerfile
+# Environment: Java (glibc support)
+# Minimum Panel Version: 0.6.0
+# ----------------------------------
+FROM	azul/zulu-openjdk-debian:8
+
+LABEL	author="WGOS" maintainer="wgos@wgos.org"
+
+RUN	apt update && apt upgrade -y \
+	&& apt install -y curl ca-certificates openssl git tar sqlite fontconfig tzdata iproute2 \
+	&& useradd -d /home/container -m container
+ 
+USER	container
+ENV	USER=container HOME=/home/container
+
+WORKDIR	/home/container
+
+COPY	./entrypoint.sh /entrypoint.sh
+
+CMD	["/bin/bash", "/entrypoint.sh"]

entrypoint.sh

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+#!/bin/bash
+cd /home/container
+
+echo "Running on Debian $(cat /etc/debian_version)"
+
+# Output Current Java Version
+java -version
+
+# 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/container$ ${MODIFIED_STARTUP}"
+
+# Run the Server
+eval ${MODIFIED_STARTUP}