Update Dockerfile

Dockerfile

@@ -8,10 +8,13 @@ RUN apt-get update && apt-get install -y \
     ninja-build \
     cmake \
     python3-dev \
-    gcc \
+    gcc-12 \
+    g++-12 \
     g++ \
     libnuma-dev \
     && rm -rf /var/lib/apt/lists/*
+    
+RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-12 10 --slave /usr/bin/g++ g++ /usr/bin/g++-12
 
 # Step 3 — Environment for CPU build
 ENV VLLM_TARGET_DEVICE=cpu
@@ -21,14 +24,17 @@ WORKDIR /workspace
 RUN git clone https://github.com/vllm-project/vllm.git
 
 # Step 5 — Install Python build tools
+RUN pip install --upgrade pip
+RUN pip install cmake>=3.26 wheel packaging ninja "setuptools-scm>=8" numpy
 RUN pip install --upgrade pip setuptools wheel packaging setuptools_scm
 
 # Step 6 — Install PyTorch CPU before building vLLM
 RUN pip install torch --extra-index-url https://download.pytorch.org/whl/cpu
 
+
 # Step 7 — Install vLLM requirements for CPU
 WORKDIR /workspace/vllm
-RUN pip install -r requirements/cpu.txt
+RUN pip install -r requirements/cpu.txt --extra-index-url https://download.pytorch.org/whl/cpu
 
 # Step 8 — Build and install vLLM from source
 RUN python setup.py install