Add Dockerfile and start script

Dockerfile

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+FROM jlesage/baseimage-gui:alpine-3.7
+
+ENV APP_NAME="iDRAC 6"
+
+RUN apk add --no-cache openjdk7-jre
+
+RUN mkdir /app && \
+    chown ${USER_ID}:${GROUP_ID} /app
+
+COPY startapp.sh /startapp.sh
+
+WORKDIR /app

startapp.sh

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+#!/bin/sh
+
+RED='\033[0;31m'
+NC='\033[0m'
+
+echo "Starting"
+
+if [ -z "${IDRAC_HOST}" ]; then
+    echo -e "${RED}Please set a proper idrac host with IDRAC_HOST${NC}"
+    sleep 2
+    exit 1
+fi
+
+if [ -z "${IDRAC_USER}" ]; then
+    echo -e "${RED}Please set a proper idrac user with IDRAC_USER${NC}"
+    sleep 2
+    exit 1
+fi
+
+if [ -z "${IDRAC_PASSWORD}" ]; then
+    echo -e "${RED}Please set a proper idrac password with IDRAC_PASSWORD${NC}"
+    sleep 2
+    exit 1
+fi
+
+echo "Environment ok"
+
+echo "Creating library folder"
+
+cd /app
+mkdir lib
+
+echo "Downloading required files"
+
+if [ ! -f avctKVM.jar ]; then
+    wget https://${IDRAC_HOST}/software/avctKVM.jar --no-check-certificate
+
+    if [ ! $? -eq 0 ]; then
+        echo -e "${RED}Failed to download avctKVM.jar, please check your settings${NC}"
+        sleep 2
+        exit 2
+    fi
+fi
+
+if [ ! -f lib/avctKVMIOLinux64.jar ]; then
+    wget -O lib/avctKVMIOLinux64.jar https://${IDRAC_HOST}/software/avctKVMIOLinux64.jar --no-check-certificate
+
+    if [ ! $? -eq 0 ]; then
+        echo -e "${RED}Failed to download avctKVMIOLinux64.jar, please check your settings${NC}"
+        sleep 2
+        exit 2
+    fi
+fi
+
+if [ ! -f lib/avctVMLinux64.jar ]; then
+    wget -O lib/avctVMLinux64.jar https://${IDRAC_HOST}/software/avctVMLinux64.jar --no-check-certificate
+
+    if [ ! $? -eq 0 ]; then
+        echo -e "${RED}Failed to download avctVMLinux64.jar, please check your settings${NC}"
+        sleep 2
+        exit 2
+    fi
+fi
+
+exec java -cp avctKVM.jar -Djava.library.path="./lib" com.avocent.idrac.kvm.Main ip=${IDRAC_HOST} kmport=5900 vport=5900 user=${IDRAC_USER} passwd=${IDRAC_PASSWORD} apcp=1 version=2 vmprivilege=true "helpurl=https://${IDRAC_HOST}:443/help/contents.html"