Show build link(s) on buildContainer task page

Fixes: https://pagure.io/koji/issue/1529

www/kojiweb/index.py

@@ -666,15 +666,20 @@ def taskinfo(environ, taskID):
     elif task['method'] == 'restartVerify':
         values['rtask'] = server.getTaskInfo(params[0], request=True)
 
+    values['taskBuilds'] = []
     if task['state'] in (koji.TASK_STATES['CLOSED'], koji.TASK_STATES['FAILED']):
         try:
             result = server.getTaskResult(task['id'])
-            values['result'] = result
-            values['excClass'] = None
         except:
             excClass, exc = sys.exc_info()[:2]
             values['result'] = exc
             values['excClass'] = excClass
+        if not values.get('result'):
+            values['result'] = result
+            values['excClass'] = None
+            if task['method'] == 'buildContainer' and 'koji_builds' in result:
+                values['taskBuilds'] = [
+                        server.getBuild(int(buildID)) for buildID in result['koji_builds']]
     else:
         values['result'] = None
         values['excClass'] = None

www/kojiweb/taskinfo.chtml

@@ -314,6 +314,13 @@ $value
       <th>Build</th><td><a href="buildinfo?buildID=$taskBuild.build_id">$koji.buildLabel($taskBuild)</a></td>
     </tr>
     #end if
+    #if $taskBuilds
+    #for $build in $taskBuilds
+    <tr>
+      <th>Build</th><td><a href="buildinfo?buildID=$build.build_id">$koji.buildLabel($build)</a></td>
+    </tr>
+    #end for
+    #end if
     <tr>
       <th>Created</th><td>$util.formatTimeLong($task.create_time)</td>
     </tr>