Refactor Dockerfile to install vLLM from source

Signed-off-by: Zhou Taichang <tzhouam@connect.ust.hk>

docker/Dockerfile.ci

@@ -15,11 +15,14 @@ RUN uv pip uninstall --system -y vllm || true
 
 # Install vLLM from source at the selected commit using precompiled artifacts
 ENV VLLM_PRECOMPILED_WHEEL_COMMIT=2754231ba3a72f41e62922d1552c33e8f3f6a9d1
-RUN uv pip install --system --force-reinstall --prerelease=allow vllm --extra-index-url https://wheels.vllm.ai/${VLLM_PRECOMPILED_WHEEL_COMMIT}
-
-RUN uv pip install --system ".[dev]"
-
-RUN uv pip install --system --upgrade \
+RUN git clone https://github.com/vllm-project/vllm.git /workspace/vllm && \
+    cd /workspace/vllm && \
+    git checkout ${VLLM_PRECOMPILED_WHEEL_COMMIT} && \
+    (uv pip uninstall --system -y vllm || true) && \
+    VLLM_USE_PRECOMPILED=1 uv pip install --system -e . && \
+    cd ${APP_DIR} && \
+    uv pip install --system ".[dev]" && \
+    uv pip install --system --upgrade \
         "flashinfer-cubin==0.6.6" \
         "nvidia-cublas-cu12==12.9.1.4" \
         "numpy==2.2.6"