Fix missing streamlit runtime dependency

Dockerfile

@@ -12,7 +12,9 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 
 COPY requirements.txt /app/requirements.txt
-RUN pip install --upgrade pip && pip install -r /app/requirements.txt
+RUN pip install --upgrade pip \
+    && pip install -r /app/requirements.txt \
+    && pip install streamlit plotly datasets
 
 COPY . /app