prod: hardened deploy config for srv1289857 — prod container names/ports (frontend :3882, backend :8010, db :5440), Dockerfile.prod (uvicorn --workers 1, init_db race fix), next.config.ts BACKEND_INTERNAL_URL build-arg rewrite, celery worker/beat healthchecks (no-HTTP daemons: inspect ping w/ tmp-file output, /proc cmdline grep; pgrep unavailable in image), pgbouncer removed, restart: unless-stopped

backend/Dockerfile.prod

@@ -0,0 +1,21 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    libpq-dev \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+EXPOSE 8000
+
+HEALTHCHECK --interval=10s --timeout=5s --retries=12 \
+  CMD curl -f http://localhost:8000/health || exit 1
+
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "1"]