Change to use non-login shell in Docker environments

src/minisweagent/config/extra/swebench.yaml

@@ -222,6 +222,7 @@ environment:
     PIP_PROGRESS_BAR: 'off'
     TQDM_DISABLE: '1'
   environment_class: docker
+  use_login_shell: false
 
 model:
   model_name: "anthropic/claude-sonnet-4-5-20250929"

src/minisweagent/environments/docker.py

@@ -31,6 +31,8 @@ class DockerEnvironmentConfig:
     """Max duration to keep container running. Uses the same format as the sleep command."""
     pull_timeout: int = 120
     """Timeout in seconds for pulling images."""
+    use_login_shell: bool = True
+    """Whether to use a login shell when executing commands. Current SWE-bench testset should disable this option."""
 
 
 class DockerEnvironment:
@@ -84,7 +86,15 @@ def execute(self, command: str, cwd: str = "", *, timeout: int | None = None) ->
                 cmd.extend(["-e", f"{key}={value}"])
         for key, value in self.config.env.items():
             cmd.extend(["-e", f"{key}={value}"])
-        cmd.extend([self.container_id, "bash", "-lc", command])
+        cmd.extend(
+            [
+                self.container_id,
+                "bash",
+            ]
+        )
+        if self.config.use_login_shell:
+            cmd.append("-l")
+        cmd.extend(["-c", command])
 
         result = subprocess.run(
             cmd,

src/minisweagent/run/extra/swebench.py

@@ -230,6 +230,9 @@ def main(
         config.setdefault("model", {})["model_name"] = model
     if model_class is not None:
         config.setdefault("model", {})["model_class"] = model_class
+    # SWE-bench images are built for non-login shells (checked on 2025-10-16)
+    if "use_login_shell" not in config.get("environment", {}):
+        config.setdefault("environment", {})["use_login_shell"] = False
 
     progress_manager = RunBatchProgressManager(len(instances), output_path / f"exit_statuses_{time.time()}.yaml")