Fix local tests script

Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>

Author: skjnldsv

cypress/start.sh

@@ -10,7 +10,8 @@ else
 	dockername="cypress_testing_$appname"
 
 	docker run -p 8000:80 --rm --name $dockername --volume $(pwd):/var/www/html/apps/$appname --env BRANCH=master --detach nextcloudci/server:server-15
-	sleep 10
+	npm i --no-save wait-on
+	npm run wait-on -- http://localhost:8000
 	docker exec --user www-data $dockername php occ app:enable $appname
 	docker exec --user www-data $dockername php occ config:system:set force_language --value en
 fi

package.json

@@ -33,7 +33,8 @@
     "stylelint": "stylelint src",
     "stylelint:fix": "stylelint src --fix",
     "cypress": "cypress run",
-    "cypress:gui": "cypress open"
+    "cypress:gui": "cypress open",
+    "wait-on": "wait-on -i 500 -t 300000"
   },
   "dependencies": {
     "@nextcloud/auth": "^0.3.1",