Changed healthcheck to only ping 1.1.1.1 to check connectivity

This is because your VPN public IP might not be the VPN server entrance IP address, resulting in the container being unhealthy most of the time.

healthcheck.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+ping -W 1 -w 1 -q -s 8 1.1.1.1 &> /dev/null
+status=$?
+if [ $status = 0 ]; then
+  exit 0
+fi
+printf "Pinging 1.1.1.1 resulted in error status code $status"
+exit 1