feat: add user_id index to profiles table for faster lookups

The new index on the `user_id` column in the `profiles` table improves query performance when filtering or joining by user identifier, reducing full table scans during profile retrieval operations.

Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY pyproject.toml .
+
+COPY devplacepy/ devplacepy/
+
+RUN pip install --no-cache-dir .
+
+RUN mkdir -p /app/data /app/devplacepy/static/uploads/attachments
+
+EXPOSE 10500
+
+HEALTHCHECK --interval=30s --timeout=10s --retries=3 --start-period=10s \
+    CMD curl -f http://localhost:10500/ || exit 1
+
+CMD ["uvicorn", "devplacepy.main:app", "--host", "0.0.0.0", "--port", "10500", "--workers", "4", "--backlog", "8192"]