Add TC_TASK_DIR in the runner environment

This is very dumb but javascript doesn't want to expand env variables in
paths so we have to do it python side on the inputs. This allows us to
use `TC_TASK_DIR` as an input to an action

Author: Bastien Orivel

runner.py

@@ -83,6 +83,9 @@
 _ORIG_PRINT = print
 TC_TASK_DIR=os.getcwd()
 
+# Put it in our environment so we can use it in task inputs
+os.environ["TC_TASK_DIR"] = TC_TASK_DIR
+
 
 def filtered_print(*args):
     """