18238: Add required container_engine parameter to builder

Arvados-DCO-1.1-Signed-off-by: Peter Amstutz <peter.amstutz@curii.com>

diff --git a/sdk/cwl/arvados_cwl/runner.py b/sdk/cwl/arvados_cwl/runner.py
index 66dff809e477b56960f2e49317ff3996f2f9058c..126a2b511e4bf42d928624a03d4f57c54ad8bb36 100644 (file)
--- a/sdk/cwl/arvados_cwl/runner.py
+++ b/sdk/cwl/arvados_cwl/runner.py
@@ -105,7 +105,8 @@ def make_builder(joborder, hints, requirements, runtimeContext, metadata):
                  outdir="",              # type: Text
                  tmpdir="",              # type: Text
                  stagedir="",            # type: Text
-                 cwlVersion=metadata.get("http://commonwl.org/cwltool#original_cwlVersion") or metadata.get("cwlVersion")
+                 cwlVersion=metadata.get("http://commonwl.org/cwltool#original_cwlVersion") or metadata.get("cwlVersion"),
+                 container_engine="docker"
                 )
 
 def search_schemadef(name, reqs):