--- old/test/jtreg-ext/requires/VMProps.java	2017-09-28 15:04:41.996881024 -0700
+++ new/test/jtreg-ext/requires/VMProps.java	2017-09-28 15:04:41.884881021 -0700
@@ -73,6 +73,7 @@
         map.put("vm.aot", vmAOT());
         // vm.cds is true if the VM is compiled with cds support.
         map.put("vm.cds", vmCDS());
+        map.put("docker.support", dockerSupport());
         vmGC(map); // vm.gc.X = true/false
 
         VMProps.dump(map);
@@ -293,6 +294,33 @@
     }
 
     /**
+     * A simple check for docker support
+     *
+     * @return true if docker is supported in a given environment
+     */
+    protected String dockerSupport() {
+        boolean isSupported;
+        try {
+            isSupported = checkDockerSupport();
+        } catch (Exception e) {
+            isSupported = false;
+            System.err.println("dockerSupprt() threw exception: " + e);
+        }
+
+        return (isSupported) ? "true" : "false";
+    }
+
+    private boolean checkDockerSupport() throws IOException, InterruptedException {
+        ProcessBuilder pb = new ProcessBuilder("docker", "ps");
+        Process p = pb.start();
+        p.waitFor();
+
+        return (p.exitValue() == 0);
+    }
+
+
+
+    /**
      * Dumps the map to the file if the file name is given as the property.
      * This functionality could be helpful to know context in the real
      * execution.