add end-to-end test workflow (#885)

* e2e: add end-to-end test workflow

- The tests are executed in a Docker container. 
-  The static users are connected via `matrix-js-sdk Client`. 
-  A test user connecting to the conference via EC.

.github/workflows/e2e.yml

@@ -0,0 +1,24 @@
+name: Run E2E tests
+on:
+  workflow_run:
+    workflows: ["deploy"]
+    types:
+      - completed
+    branches-ignore:
+      - "main"
+jobs:
+  e2e:
+    name: E2E tests runs on Element Call
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out test private repo
+        uses: actions/checkout@v3
+        with:
+          repository: vector-im/static-call-participant
+          ref: refs/heads/main
+          path: static-call-participant
+          token: ${{ secrets.GH_E2E_TEST_TOKEN }}
+      - name: Build E2E Image
+        run: "cd static-call-participant && docker build --no-cache --tag matrixdotorg/chrome-node-static-call-participant:latest ."
+      - name: Run E2E tests in container
+        run: "docker run --rm -v '${{ github.workspace }}/static-call-participant/callemshost-users.txt:/opt/app/callemshost-users.txt' matrixdotorg/chrome-node-static-call-participant:latest ./e2e.sh"

README.md

@@ -96,4 +96,4 @@ There are currently two different config files. `.env` holds variables that are
 
 ## Translation
 
-If you'd like to help translate Element Call, head over to [translate.element.io](https://translate.element.io/engage/element-call/). You're also encouraged to join the [Element Translators](https://matrix.to/#/#translators:element.io) space to discuss and coordinate translation efforts.
+Bf you'd like to help translate Element Call, head over to [translate.element.io](https://translate.element.io/engage/element-call/). You're also encouraged to join the [Element Translators](https://matrix.to/#/#translators:element.io) space to discuss and coordinate translation efforts.