fix: dockerfile pip command

Author: Kanaricc

scripts/docker/dockerfile

@@ -34,7 +34,7 @@ RUN pip install uv
 RUN uv venv /opt/venv --python=3.10 && \
     . /opt/venv/bin/activate && \
     uv pip install -e .[verl] && \
-    uv pip install flash_attn==2.8.1 --no-deps --no-cache-dir
+    uv pip install flash_attn==2.8.1 --no-deps --no-cache-dir --no-build-isolation
 
 # set entrypoint to activate the virtual environment
 ENTRYPOINT ["/bin/bash", "-c", "source /opt/venv/bin/activate && exec \"$@\"", "--"]