portainer/app/components/sidebar/sidebarController.js

angular.module('sidebar', [])
.controller('SideBarController', ['$scope', 'Container', 'Settings',
function($scope, Container, Settings) {
    $scope.template = 'partials/sidebar.html';
    $scope.containers = [];
    $scope.endpoint = Settings.endpoint;

    Container.query({all: 0}, function(d) {
        $scope.containers = d;
    });
}]);