Implement integration Selenium tests.

.github/workflows/integration_selenium.yaml

@@ -0,0 +1,45 @@
+name: Integration Selenium
+on: [push, pull_request]
+env:
+  GALAXY_TEST_DBURI: 'postgres://postgres:postgres@localhost:5432/galaxy?client_encoding=utf8'
+  GALAXY_TEST_SELENIUM_REMOTE: '1'
+  GALAXY_TEST_SELENIUM_REMOTE_PORT: "4444"
+  GALAXY_SKIP_CLIENT_BUILD: '0'
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-18.04
+    strategy:
+      matrix:
+        python-version: [3.7]
+    services:
+      postgres:
+        image: postgres:11
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: postgres
+        ports:
+          - 5432:5432
+      selenium:
+        image: selenium/standalone-chrome:3.141.59
+        ports:
+          - 4444:4444
+    steps:
+    - name: Prune unused docker image, volumes and containers
+      run: docker system prune -a -f
+    - uses: actions/checkout@v2
+      with:
+        path: 'galaxy root'
+    - uses: actions/setup-python@v1
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Cache pip dir
+      uses: actions/cache@v1
+      id: pip-cache
+      with:
+        path: ~/.cache/pip
+        key: pip-cache-${{ matrix.python-version }}-${{ hashFiles('galaxy root/requirements.txt') }}
+    - name: Run tests
+      run: './run_tests.sh -integration test/integration_selenium'
+      working-directory: 'galaxy root'