Refactor Dockerfile for uv installation and venv setup

Updated Dockerfile to streamline uv installation and environment setup.

Dockerfile

@@ -9,30 +9,27 @@ WORKDIR /app
 
 # Install uv
 RUN curl -LsSf https://astral.sh/uv/install.sh | sh
-
-# Make uv visible to shell
 ENV PATH="/root/.local/bin:${PATH}"
 
-# Create uv virtual environment
+# Create uv venv
 RUN uv venv /app/.venv
-
-# Activate venv for rest of image
 ENV VIRTUAL_ENV=/app/.venv
 ENV PATH="/app/.venv/bin:${PATH}"
 
-# Make project importable
-ENV PYTHONPATH="/app"
-
+# Copy project
 COPY . .
 
+# IMPORTANT: ensure scheduler/ is importable ALWAYS
+ENV PYTHONPATH="/app"
+
+# Install dependencies inside venv
 RUN uv pip install --upgrade pip setuptools wheel \
     && uv pip install .
 
+# Sanity check
 RUN uv --version \
-    && which uv \
-    && which python \
     && python --version \
-    && which streamlit
+    && pip list
 
 EXPOSE 8501