Issue #116 Server startup fails with "port out of range:-1" error (#117)

Author: motofix

src/main/java/io/zonky/test/db/postgres/embedded/EmbeddedPostgres.java

@@ -219,7 +219,13 @@ Map<String, String> getConnectConfig()
     private static int detectPort() throws IOException
     {
         try (ServerSocket socket = new ServerSocket(0)) {
+            while(!socket.isBound()) {
+                Thread.sleep(50);
+            }
             return socket.getLocalPort();
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new IOException("Thread interrupted", e);
         }
     }