Fix it again

Author: uuf6429

.github/workflows/ci.yml

@@ -68,14 +68,13 @@ jobs:
             php: "7.2"
             # language=bash
             setUpCmd: |
-              export SELENIUM_BROWSER=firefox
-              export SELENIUM_VERSION=2.53.1
-              export SELENIUM_IMAGE=selenium/standalone-\$SELENIUM_BROWSER:\$SELENIUM_VERSION
+              export SELENIUM_IMAGE=selenium/standalone-firefox:2.53.1
               docker compose up --wait --quiet-pull
               curl --retry 5 --retry-all-errors --retry-delay 1 --max-time 10 --head -X GET http://localhost:4444/wd/hub/status
             # language=bash
             testCmd: |
-              export WEB_FIXTURES_BROWSER=\$SELENIUM_BROWSER
+              export WEB_FIXTURES_BROWSER=firefox
+              export SELENIUM_VERSION=2.53.1
               export DRIVER_MACHINE_BASE_PATH=/fixtures/
               export WEB_FIXTURES_HOST=http://host.docker.internal:8002
               ./vendor/bin/phpunit --colors=always --testdox