Initial framework for docker env (#40)

* Initial framework for docker env

* Update test name

* add features

* Download Qlib data with extra_volume

* fix pytest error

* Fix the parameters

---------

Co-authored-by: Young <afe.young@gmail.com>

test/utils/test_env.py

@@ -0,0 +1,42 @@
+import os
+import sys
+import subprocess
+import unittest
+from pathlib import Path
+sys.path.append(str(Path(__file__).resolve().parent.parent))
+from rdagent.utils.env import QTDockerEnv
+import shutil
+
+
+DIRNAME = Path(__file__).absolute().resolve().parent
+
+
+class EnvUtils(unittest.TestCase):
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        # NOTE: For a docker file, the output are generated with root permission.
+        # mlrun_p = DIRNAME / "env_tpl" / "mlruns" 
+        # if mlrun_p.exists():
+        #     shutil.rmtree(mlrun_p)
+        ...
+
+    def test_docker(self):
+        """
+        We will mount `env_tpl` into the docker image.
+        And run the docker image with `qrun conf.yaml`
+        """
+        qtde = QTDockerEnv()
+        qtde.prepare()
+        qtde.prepare()  # you can prepare for multiple times. It is expected to handle it correctly
+        # the stdout are returned as result
+        result = qtde.run(local_path=str(DIRNAME / "env_tpl"), entry="qrun conf.yaml")
+
+        mlrun_p = DIRNAME / "env_tpl" / "mlruns" 
+        self.assertTrue(mlrun_p.exists(), f"Expected output file {mlrun_p} not found")
+
+
+if __name__ == "__main__":
+    unittest.main()