Dbp 618 ausfuehren der playwright tests fuer beliebige branches (#10)

- add workflow_call
- set FRONTEND_URL frontendHostname if given
* Add manual dispatch description to README
* move env variable to correct job

.github/workflows/playwright.yml

@@ -1,9 +1,21 @@
 name: Playwright Tests
 on:
+  workflow_call:
+    inputs:
+      frontendHostname:
+        type: string
+        description: 'Hostname of the frontend server (optional)'
+        required: false
   workflow_dispatch:
+    inputs:
+      frontendHostname:
+        type: string
+        description: 'Hostname of the frontend server (optional)'
+        required: false
   push:
     branches: [ main ]
-jobs:
+
+jobs: 
   test:
     timeout-minutes: 60
     runs-on: ubuntu-latest
@@ -16,6 +28,9 @@ jobs:
       run: npm ci
     - name: Install Playwright Browsers
       run: npx playwright install --with-deps
+    - name: If input frontendHostname is given, set env variable
+      if: github.event.inputs.frontendHostname != ''
+      run: echo "FRONTEND_URL=https://${frontendHostname}/" >> $GITHUB_ENV
     - name: Run Playwright tests
       run: npx playwright test
       env:

README.md

@@ -21,6 +21,9 @@ npx playwright show-report results\results-2023-10-06T13_49_14_593
 ## Code-Generator starten: 
 npx playwright codegen https://test.dev.spsh.dbildungsplattform.de
 
+## Code-Generator aus GHA starten: 
+Run workflow "Playwright Tests" with frontendHostname: test.dev.spsh.dbildungsplattform.de
+
 ## debug-mode: 
 git bash: PWDEBUG=1 npx playwright test login.spec.ts --headed