Discovery service setup + Docker

SymphonyDiscovery/src/main/java/io/github/lumijiez/Main.java

@@ -0,0 +1,7 @@
+package io.github.lumijiez;
+
+public class Main {
+    public static void main(String[] args) {
+        System.out.print("Discovery service up and running");
+    }
+}