diff --git a/disdat/entrypoints/docker_ep.py b/disdat/entrypoints/docker_ep.py
index abe959a..77c4581 100755
--- a/disdat/entrypoints/docker_ep.py
+++ b/disdat/entrypoints/docker_ep.py
@@ -253,9 +253,7 @@ def run_disdat_container(args):
     sys.exit(os.EX_OK)
 
 
-def main():
-
-    input_args = sys.argv[1:]
+def argparse_and_run(input_args):
 
     # To simplify configuring and building pipeline images, we can keep
     # various default parameter values in the Docker image makefile,
@@ -378,6 +376,11 @@ def main():
     run_disdat_container(args)
 
 
+def main():
+    input_args = sys.argv[1:]
+    argparse_and_run(input_args)
+
+
 if __name__ == '__main__':
     main()