Prevent deadlock on thread synchronization via CountDownLatch

Author: Łukasz Jackiewicz

src/main/java/org/csanchez/jenkins/plugins/kubernetes/pipeline/ContainerExecProc.java

@@ -97,8 +97,11 @@ public void kill() throws IOException, InterruptedException {
     public int join() throws IOException, InterruptedException {
         try {
             LOGGER.log(Level.FINEST, "Waiting for websocket to close on command finish ({0})", finished);
-            finished.await();
-            LOGGER.log(Level.FINEST, "Command is finished ({0})", finished);
+            if (finished.await(1, TimeUnit.MINUTES)) {
+                LOGGER.log(Level.FINEST, "Command is finished (the count reached zero)");
+            } else {
+                LOGGER.log(Level.FINEST, "Command is finished (waiting time elapsed before the count reached zero)");
+            }
 
             CompletableFuture<Integer> exitCodeFuture = watch.exitCode();