Add E2E Tests workflow

.github/workflows/e2e.yml

@@ -0,0 +1,29 @@
+name: E2E Tests
+
+on: [push, pull_request]
+
+jobs:
+  e2e-tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+      name: Check out repository code
+
+    # Setup Docker Buildx
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+
+    # Starting background services
+    - name: Start background services
+      run: docker compose up -d --build localstack coordinator participant coordinator_db participant_db
+
+    # Running e2e tests
+    - name: Run e2e tests
+      run: docker compose up --build e2e_test
+      # Ensure the action fails if the e2e_test service fails
+      continue-on-error: false
+
+    # Cleanup
+    - name: Cleanup
+      if: always()
+      run: docker compose down --volumes --remove-orphans