fix docker-compose files to work with 21.10

fixes to match TCP protocol of 21.10
fixes so that we can gossip on SSL

test/common/base_test.js

@@ -55,7 +55,7 @@ function setUpWithGossipSeeds(cb) {
 }
 
 function setUpWithDns(cb) {
-  var clusterDns = 'discover://eventstore.local:2113';
+  var clusterDns = 'discover://' + process.env.EVENTSTORE_HOST + ':2113';
   this.log = settings.log;
   this.testStreamName = 'test-' + uuid.v4();
   var connected = false;