chore: add command to create virtual environment in Dockerfile

Dockerfile

@@ -38,6 +38,10 @@ RUN if ! command -v uv >/dev/null 2>&1; then \
         mv /root/.local/bin/uvx /usr/local/bin/uvx; \
     fi
     
+
+# Create virtual environment first
+RUN uv venv
+
 # Install dependencies using uv sync
 # If uv.lock exists, use it; otherwise resolve on the fly
 RUN --mount=type=cache,target=/root/.cache/uv \