Allow heading tags (h1-h6) in ContentSanitizer so news editor headings render

services/enhance-worker/Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  ca-certificates \
+  unzip \
+  libgomp1 \
+  libgl1 \
+  libglib2.0-0 \
+  curl \
+  libvulkan1 \
+  mesa-vulkan-drivers \
+  gosu \
+  && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app ./app
+COPY bin ./bin
+COPY models ./models
+COPY scripts ./scripts
+
+RUN useradd --system --create-home worker \
+  && mkdir -p /app/bin /app/models /app/storage/tmp /app/storage/output /app/app/models \
+  && chmod +x /app/scripts/*.sh \
+  && chown -R worker:worker /app
+
+EXPOSE 8095
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
+  CMD curl --fail http://127.0.0.1:8095/health || exit 1
+
+ENTRYPOINT ["/app/scripts/entrypoint.sh"]
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8095"]