diff --git a/docker/art-gpu.Dockerfile b/docker/art-gpu.Dockerfile
index 576ff902b..d2370b3e2 100644
--- a/docker/art-gpu.Dockerfile
+++ b/docker/art-gpu.Dockerfile
@@ -140,6 +140,7 @@ RUN if ! getent group messagebus >/dev/null; then groupadd -r messagebus; fi \
 
 COPY --from=builder --chown=sky:sky /opt/uv-cache /opt/uv-cache
 COPY --from=builder --chown=sky:sky /opt/uv-python /opt/uv-python
+COPY --from=builder --chown=sky:sky /opt/src/art/megatron_runtime/pyproject.toml /opt/src/art/megatron_runtime/uv.lock /opt/src/art/megatron_runtime/
 
 USER sky
 WORKDIR /home/sky
diff --git a/tests/unit/test_gpu_image_build_context.py b/tests/unit/test_gpu_image_build_context.py
index a3279ada6..becea27b8 100644
--- a/tests/unit/test_gpu_image_build_context.py
+++ b/tests/unit/test_gpu_image_build_context.py
@@ -13,3 +13,23 @@ def test_gpu_image_build_context_copies_every_local_docker_source() -> None:
             continue
         for source in shlex.split(line)[1:-1]:
             assert f"${{repo_root}}/{source}" in build_script
+
+
+def test_gpu_image_retains_only_managed_megatron_project_metadata() -> None:
+    dockerfile = (ROOT / "docker/art-gpu.Dockerfile").read_text()
+    final_stage = dockerfile.rsplit("\nFROM ", 1)[1]
+    copies = [
+        shlex.split(line)
+        for line in final_stage.splitlines()
+        if line.startswith("COPY ") and "/opt/src/art" in line
+    ]
+    assert copies == [
+        [
+            "COPY",
+            "--from=builder",
+            "--chown=sky:sky",
+            "/opt/src/art/megatron_runtime/pyproject.toml",
+            "/opt/src/art/megatron_runtime/uv.lock",
+            "/opt/src/art/megatron_runtime/",
+        ]
+    ]