ix: correct duckdb typo and pre-download VSS extension

Dockerfile

@@ -1,6 +1,20 @@
 # ---- 1. base image ---------------------------------------------------------
 FROM python:3.11-slim
 
+# ---- 2. system dependencies for binary wheels ------------------------------
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        build-essential \
+        gcc \
+        g++ \
+        cmake \
+        libgomp1 \
+        libstdc++6 \
+        ca-certificates \
+        wget \
+        unzip \
+    && rm -rf /var/lib/apt/lists/*# ---- 1. base image ---------------------------------------------------------
+FROM python:3.11-slim
+
 # ---- 2. system dependencies for binary wheels ------------------------------
 RUN apt-get update && apt-get install -y --no-install-recommends \
         build-essential \
@@ -36,5 +50,30 @@ WORKDIR /app
 # ---- 7. scheduler loop ----------------------------------------------------
 COPY scheduler_loop.py /app/scheduler_loop.py
 
+# ---- 8. start both services -----------------------------------------------
+CMD sh -c "python -m uvicorn app.main:app --host 0.0.0.0 --port 7860 & python /app/scheduler_loop.py"
+
+# ---- 3. upgrade pip & enable pre-built wheels ------------------------------
+RUN pip install --no-cache-dir --upgrade pip setuptools wheel
+
+# ---- 4. install Python deps (+ DuckDB driver) ------------------------------
+COPY requirements.txt /tmp/requirements.txt
+RUN pip install --no-cache-dir --prefer-binary -r /tmp/requirements.txt && \
+    pip install --no-cache-dir duckdb==0.10.3
+
+# ---- 5. Pre-download VSS extension (matches DuckDB v0.10.3) ---------------
+# This prevents runtime download failures and startup crashes
+RUN mkdir -p /root/.duckdb/extensions/v0.10.3/linux_amd64_gcc4 && \
+    wget -q https://extensions.duckdb.org/v0.10.3/linux_amd64_gcc4/vss.duckdb_extension.gz \
+         -O /root/.duckdb/extensions/v0.10.3/linux_amd64_gcc4/vss.duckdb_extension.gz && \
+    gunzip /root/.duckdb/extensions/v0.10.3/linux_amd64_gcc4/vss.duckdb_extension.gz
+
+# ---- 6. copy source --------------------------------------------------------
+COPY . /app
+WORKDIR /app
+
+# ---- 7. scheduler loop ----------------------------------------------------
+COPY scheduler_loop.py /app/scheduler_loop.py
+
 # ---- 8. start both services -----------------------------------------------
 CMD sh -c "python -m uvicorn app.main:app --host 0.0.0.0 --port 7860 & python /app/scheduler_loop.py"