diff --git a/pydra/environments/docker.py b/pydra/environments/docker.py
index 3c6da919a..2ef7d09d1 100644
--- a/pydra/environments/docker.py
+++ b/pydra/environments/docker.py
@@ -37,7 +37,7 @@ def execute(self, job: "Job[shell.Task]") -> dict[str, ty.Any]:
         output = dict(zip(keys, values))
         if output["return_code"]:
             if output["stderr"]:
-                raise RuntimeError(output["stderr"])
+                raise RuntimeError(output["stdout"] + "\n" + output["stderr"])
             else:
                 raise RuntimeError(output["stdout"])
         return output