Add SKIP_CERTBOT_OWNERSHIP env var support to skip certbot folder ownership

docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/30-ownership.sh

@@ -28,7 +28,10 @@ CERT_INIT_FLAG="/opt/certbot/.ownership_initialized"
 
 if [ ! -f "$CERT_INIT_FLAG" ]; then
 	# Prevents errors when installing python certbot plugins when non-root
-	chown "$PUID:$PGID" /opt/certbot /opt/certbot/bin
+	if [ "$SKIP_CERTBOT_OWNERSHIP" != "true" ]; then
+		log_info 'Changing ownership of /opt/certbot directories ...'
+		chown "$PUID:$PGID" /opt/certbot /opt/certbot/bin
+	fi
 
 	# Handle all site-packages directories efficiently
 	find /opt/certbot/lib -type d -name "site-packages" | while read -r SITE_PACKAGES_DIR; do