Added Docker stuff.

directives/wavesurfer.directive.js

@@ -0,0 +1,23 @@
+'use strict';
+
+angular
+    .module('sloDialectsApp')
+
+    .directive('ngWavesurfer', function () {
+        return {
+            restrict: 'E',
+
+            link: function ($scope, $element, $attrs) {
+                $element.css('display', 'block');
+
+                var options = angular.extend({ container: $element[0] }, $attrs);
+                var wavesurfer = WaveSurfer.create(options);
+
+                if ($attrs.url) {
+                    wavesurfer.load($attrs.url, $attrs.data || null);
+                }
+
+                $scope.$emit('wavesurferInit', wavesurfer);
+            }
+        };
+    });