fix: build-image return code on error

Signed-off-by: OjusWiZard <[email protected]>

Author: OjusWiZard

autonomy/deploy/image.py

@@ -82,7 +82,7 @@ def build_image(  # pylint: disable=too-many-arguments,too-many-locals
         version=image_version,
     )
 
-    subprocess.run(  # nosec # pylint: disable=subprocess-run-check
+    build_process = subprocess.run(  # nosec # pylint: disable=subprocess-run-check
         [
             "docker",
             "build",
@@ -110,6 +110,8 @@ def build_image(  # pylint: disable=too-many-arguments,too-many-locals
         ]
     )
 
+    build_process.check_returncode()
+
 
 class ImageBuildFailed(Exception):
     """Raise when there's an error while building the agent image."""

tests/test_autonomy/test_cli/test_build_image.py

@@ -180,11 +180,11 @@ def test_service_file_missing(
     def test_image_build_fail(self) -> None:
         """Test prod build."""
 
-        result = self.run_cli(
+        exit_code, stdout, stderr = self.run_cli_subprocess(
             commands=(
                 "valory/agent:bafybeihyasfforsfualp6jnhh2jj7nreqmws2ygyfnh4p3idmfkm5yxu11",
             )
         )
 
-        assert result.exit_code == 1, result.output
-        assert "Error occured while downloading agent" in result.output
+        assert exit_code == 1, stdout
+        assert "Error occured while downloading agent" in stderr