ref(workflow): the key in env must be a string

Author: aledbf

rootfs/scheduler/__init__.py

@@ -640,7 +640,7 @@ def _create_rc(self, name, image, command, **kwargs):  # noqa
 
         if env:
             for k, v in env.items():
-                containers[0]["env"].append({"name": k, "value": v})
+                containers[0]["env"].append({"name": k, "value": str(v)})
 
         if mem or cpu:
             containers[0]["resources"] = {"limits": {}}