Fix Python version mismatch - use python3 -m pip and python3 in CMD

Dockerfile

@@ -7,10 +7,11 @@ RUN apt-get update && apt-get install -y \
 
 # Set Python 3.11 as default
 RUN update-alternatives --install /usr/bin/python python /usr/bin/python3.11 1
+RUN update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.11 1
 RUN update-alternatives --install /usr/bin/pip pip /usr/bin/pip3 1
 
-# Install PyTorch and ML libraries
-RUN pip install --no-cache-dir \
+# Install PyTorch and ML libraries using python3 -m pip to ensure correct Python
+RUN python3 -m pip install --no-cache-dir \
     torch==2.3.0 \
     transformers>=4.45.0 \
     datasets>=2.18.0 \
@@ -36,5 +37,5 @@ ENV HF_HUB_ENABLE_HF_TRANSFER=1
 # Expose Gradio port
 EXPOSE 7860
 
-# Run training app
-CMD ["python", "app.py"]
+# Run training app with python3 explicitly
+CMD ["python3", "app.py"]