Update substra_launcher.py

substra_launcher.py

@@ -19,15 +19,19 @@ async def launch_substra_space(
         folder_path="./substra_template/"
     )
 
-    ENV_FILE = f"""\
-SUBSTRA_ORG1_DISTR={hospital_a / 100}
-SUBSTRA_ORG2_DISTR={hospital_b / 100}\
+    DOCKER_FILE = f"""\
+FROM ghcr.io/substra/substrafl:substra-hf-demo
+
+ENV SUBSTRA_ORG1_DISTR={hospital_a / 100}
+ENV SUBSTRA_ORG2_DISTR={hospital_b / 100}
+
+CMD ["bash", "docker-run.sh"]\
 """
 
     hf_api.upload_file(
         repo_id=repo_id,
-        path_or_fileobj=ENV_FILE.encode(),
-        path_in_repo="substra_template/.env",
+        path_or_fileobj=DOCKER_FILE.encode(),
+        path_in_repo="substra_template/Dockerfile",
         repo_type="space",
     )