Startup metro server for duration of e2e test

Update e2e-ios.yml

Author: Jasonvdb

.github/scripts/test-ios.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -eo pipefail
+
+#Start metro server
+yarn start &
+P1=$!
+#perform tests
+yarn e2e:ios-test &
+P2=$!
+#wait for tests to finish
+wait $P2
+#kill metro server
+kill $P1

.github/workflows/e2e-ios.yml

@@ -51,6 +51,11 @@ jobs:
           gem update cocoapods xcodeproj
           yarn ios:pods
 
-      - run: brew tap wix/brew
-      - run: brew install applesimutils
-      - run: yarn e2e:ios-build && yarn e2e:ios-test
+      - name: Install brew dependencies
+        run: brew tap wix/brew && brew install applesimutils
+
+      - name: Build iOS app
+        run: yarn e2e:ios-build
+
+      - name: Test iOS app
+        run: sh ../.github/scripts/test-ios.sh