Moved dmidecode script from Dockerfile to own file

lib/dmidecode

@@ -0,0 +1,24 @@
+
+
+#!/bin/sh
+echo "Creating local dmidecode for Docker usage."
+if [ "$1" = "-s" ] && [ "$2" = "system-uuid" ]; then
+    UUID_FILE="$HOME/.hytale_system_uuid"
+
+    if [ -f "$UUID_FILE" ]; then
+        cat "$UUID_FILE"
+    else
+        if command -v uuidgen >/dev/null 2>&1; then
+            uuidgen | tr "A-Z" "a-z" | tee "$UUID_FILE" >/dev/null
+        else
+            cat /proc/sys/kernel/random/uuid | tee "$UUID_FILE" >/dev/null
+        fi
+        cat "$UUID_FILE"
+    fi
+
+    printf "\n"
+    exit 0
+fi
+
+echo "dmidecode shim: unsupported args: $*" >&2
+exit 1