[Bug] Login shell error: bash: /root/.cargo/env: No such file or directory (#12941)

docker/Dockerfile

@@ -314,7 +314,8 @@ RUN --mount=type=cache,target=/root/.cache/pip curl --proto '=https' --tlsv1.2 -
     && cd /sgl-workspace/sglang/sgl-router \
     && ulimit -n 65536 && maturin build --release --features vendored-openssl --out dist \
     && python3 -m pip install --force-reinstall dist/*.whl \
-    && rm -rf /root/.cargo /root/.rustup target dist ~/.cargo
+    && rm -rf /root/.cargo /root/.rustup target dist ~/.cargo \
+    && sed -i '/\.cargo\/env/d' /root/.profile /root/.bashrc 2>/dev/null || true
 
 
 # Add yank script