build(docker): migrate to uv for deterministic builds and fix context

.dockerignore

@@ -4,6 +4,7 @@
 
 # Python / Environment
 venv
+.venv
 __pycache__
 *.pyc
 .pytest_cache
@@ -13,7 +14,7 @@ pytest.ini
 
 # Testing & Dev
 tests
-requirements-dev.txt
+requirements.txt
 .pre-commit-config.yaml
 .github
 
@@ -35,5 +36,3 @@ LICENSE
 # Heavy Assets & Tooling
 examples
 tools
-uv.lock
-.python-version

Dockerfile

@@ -1,18 +1,36 @@
 FROM python:3.13-slim
 
+# 1. Install 'uv' from the official image
+COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
+
 # Prevent Python from writing pyc files and buffering stdout
 ENV PYTHONDONTWRITEBYTECODE=1
 ENV PYTHONUNBUFFERED=1
 
 WORKDIR /app
 
-COPY requirements.txt .
-RUN pip install --no-cache-dir -r requirements.txt
+# 2. Copy dependency files first (for Docker layer caching)
+COPY pyproject.toml uv.lock ./
+
+# 3. Install dependencies using uv
+# --frozen: fail if the lockfile is out of sync
+# --no-dev: production only (skips pytest, ruff, etc.)
+# --no-install-project: install libs first, project code comes later
+RUN uv sync --frozen --no-dev --no-install-project
 
+# 4. Copy the rest of the application
 COPY . .
 
+# 5. Add the virtual environment to PATH
+# uv creates the venv at /app/.venv by default
+ENV PATH="/app/.venv/bin:$PATH"
+
 EXPOSE 8501
 
+# Note: Ensure 'curl' is installed if you keep this healthcheck,
+# as python:slim images often lack it.
+RUN apt-get update && apt-get install -y curl && rm -rf /var/lib/apt/lists/*
+
 HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health || exit 1
 
 CMD ["streamlit", "run", "app.py", "--server.address=0.0.0.0"]