portainer/app/docker/views/services/edit/includes/networks.html

<div id="service-network-specs">
  <rd-widget>
    <rd-widget-header icon="fa-tasks" title-text="Networks">
      <div class="nopadding" authorization="DockerServiceUpdate">
        <a class="btn btn-default btn-sm pull-right" ng-click="isUpdating || addNetwork(service)" ng-disabled="isUpdating">
          <i class="fa fa-plus-circle" aria-hidden="true"></i> network
        </a>
      </div>
    </rd-widget-header>
    <rd-widget-body ng-if="!service.Networks || service.Networks.length === 0">
      <p>This service is not connected to any networks.</p>
    </rd-widget-body>
    <rd-widget-body ng-if="service.Networks && service.Networks.length > 0" classes="no-padding">
      <table class="table">
        <thead>
          <tr>
            <th>Name</th>
            <th>ID</th>
            <th>IP address</th>
            <th>Actions</th>
          </tr>
        </thead>
        <tbody>
          <tr ng-repeat="network in service.Networks">
            <td>
              <select
                ng-if="network.Editable"
                class="form-control"
                ng-model="network.Id"
                ng-change="updateNetwork(service)"
                ng-options="net.Id as net.Name for net in filterNetworks(swarmNetworks, network)"
                disable-authorization="DockerServiceUpdate"
                style="width: initial; min-width: 50%"
              >
                <option disabled value="" selected>Select a network</option>
              </select>
              <span ng-if="!network.Editable">{{ network.Name }}</span>
            </td>
            <td>
              <a ui-sref="docker.networks.network({id: network.Id})">{{ network.Id }}</a>
            </td>
            <td>
              {{ network.Addr }}
            </td>
            <td ng-if="network.Editable" authorization="DockerServiceUpdate">
              <span class="input-group-btn">
                <button class="btn btn-sm btn-danger" type="button" ng-click="removeNetwork(service, $index)" ng-disabled="isUpdating">
                  <i class="fa fa-trash" aria-hidden="true"></i>
                </button>
              </span>
            </td>
            <td ng-if="!network.Editable"></td>
          </tr>
        </tbody>
      </table>
    </rd-widget-body>
    <rd-widget-footer authorization="DockerServiceUpdate">
      <div class="btn-toolbar" role="toolbar">
        <div class="btn-group" role="group">
          <button type="button" class="btn btn-primary btn-sm" ng-disabled="isUpdating || !hasChanges(service, ['Networks'])" ng-click="updateService(service)">
            Apply changes
          </button>
          <button type="button" class="btn btn-default btn-sm dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
            <span class="caret"></span>
          </button>
          <ul class="dropdown-menu">
            <li><a ng-click="cancelChanges(service, ['Networks'])">Reset changes</a></li>
            <li><a ng-click="cancelChanges(service)">Reset all changes</a></li>
          </ul>
        </div>
      </div>
    </rd-widget-footer>
  </rd-widget>
</div>