Fix Ruby API documentation generator

Author: p0deje

generate_api_docs.sh

@@ -10,11 +10,7 @@ py)
   tox -c py/tox.ini -e docs || exit
   ;;
 rb)
-  cd rb || exit
-  bundle install || exit
-  cd ..
   bazel run //rb:docs || exit
-  git checkout rb/Gemfile.lock || true
   ;;
 *)
   echo "Selenium API docs generation"
@@ -45,7 +41,7 @@ py)
   ;;
 rb)
   rm -rf docs/api/rb
-  mv bazel-bin/rb/docs.runfiles/selenium/docs/api/rb docs/api/rb
+  mv "$(bazel cquery --output=files //rb:docs 2> /dev/null).runfiles/selenium/docs/api/rb" docs/api/rb
   ;;
 *)
   echo "ERROR: unknown parameter \"$API_DOCS_LANGUAGE\""

rb/BUILD.bazel

@@ -666,9 +666,10 @@ rb_binary(
         "README.md",
     ]),
     args = [
-        "--output_dir=docs/api/rb",
+        "doc",
+        "--output-dir=docs/api/rb",
         "--readme=rb/README.md",
-        "rb/lib/**/*.rb",
+        "rb/lib",
         "rb/CHANGES",
         "rb/README.md",
     ],