set nginx DNS configuration from container resolv.conf to allow proxy to operate behind firewall

entrypoint.sh

@@ -3,6 +3,15 @@
 set -Eeuo pipefail
 trap "echo TRAPed signal" HUP INT QUIT TERM
 
+#configure nginx DNS settings to match host, why must we do that nginx?
+conf="resolver $(/usr/bin/awk 'BEGIN{ORS=" "} $1=="nameserver" {print $2}' /etc/resolv.conf) ipv6=off; # Avoid ipv6 addresses for now"
+[ "$conf" = "resolver ;" ] && echo "no nameservers found" && exit 0
+confpath=/etc/nginx/resolvers.conf
+if [ ! -e $confpath ] || [ "$conf" != "$(cat $confpath)" ]
+then
+    echo "$conf" > $confpath
+fi
+
 # The list of SAN (Subject Alternative Names) for which we will create a TLS certificate.
 ALLDOMAINS=""