No need to bind to 0.0.0.0 when running in same container

services/web/test/acceptance/coffee/helpers/MockDocUpdaterApi.coffee

@@ -6,7 +6,7 @@ module.exports = MockDocUpdaterApi =
 		app.post "/project/:project_id/flush", (req, res, next) =>
 			res.sendStatus 200
 
-		app.listen 3003, '0.0.0.0', (error) ->
+		app.listen 3003, (error) ->
 			throw error if error?
 		.on "error", (error) ->
 			console.error "error starting MockDocUpdaterApi:", error.message

services/web/test/acceptance/coffee/helpers/MockDocstoreApi.coffee

@@ -22,7 +22,7 @@ module.exports = MockDocStoreApi =
 			docs = (doc for doc_id, doc of @docs[req.params.project_id])
 			res.send JSON.stringify docs
 
-		app.listen 3016, '0.0.0.0', (error) ->
+		app.listen 3016, (error) ->
 			throw error if error?
 		.on "error", (error) ->
 			console.error "error starting MockDocStoreApi:", error.message