nginx-le.sh: add support for config file path, not domain name only

certs/nginx-le.sh

@@ -5,6 +5,11 @@ shift
 
 [ -n "$DOMAIN" ] || exit
 
+if [ -r "$DOMAIN" ] ; then
+    NCONF="$DOMAIN"
+    DOMAIN=$(basename "$DOMAIN" .conf)
+fi
+
 DIR=/var/spool/nginx/tmp/client
 [ -d "$DIR" ] || DIR=/var/lib/nginx/tmp/client
 
@@ -15,7 +20,7 @@ serv nginx reload || exit
 
 letsencrypt certonly --webroot -w$DIR -d $DOMAIN $@ || exit
 
-NCONF=/etc/nginx/sites-enabled.d/$DOMAIN.conf
+[ -n "$NCONF" ] || NCONF=/etc/nginx/sites-enabled.d/$DOMAIN.conf
 KEY=/etc/letsencrypt/live/$DOMAIN/privkey.pem
 PEM=/etc/letsencrypt/live/$DOMAIN/fullchain.pem
 CHAIN=/etc/letsencrypt/live/$DOMAIN/chain.pem