feat(docker): add full-stack setup with FastAPI + Gradio and healthcheck

Dockerfile

@@ -1,63 +1,41 @@
-# ---------- Stage 1: Build wheels ----------
-FROM python:3.12-slim AS builder
-
-ENV PIP_NO_CACHE_DIR=1 \
-    PYTHONDONTWRITEBYTECODE=1 \
-    PYTHONUNBUFFERED=1
-
-WORKDIR /build
-
-# If you truly need to compile deps, keep build-essential.
-# If you use psycopg[binary], you can safely drop build-essential.
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    build-essential \
-  && rm -rf /var/lib/apt/lists/*
-
-COPY requirements.txt .
-RUN pip install --upgrade pip && \
-    pip wheel --wheel-dir /wheels -r requirements.txt
-
-# ---------- Stage 2: Runtime image ----------
-FROM python:3.12-slim AS runtime
-
-ENV PIP_NO_CACHE_DIR=1 \
-    PYTHONDONTWRITEBYTECODE=1 \
-    PYTHONUNBUFFERED=1 \
-    PYTHONPATH=/app
+# ---------- Base ----------
+FROM python:3.12-slim AS base
 
 WORKDIR /app
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1
 
-# HTTPS certs for outbound calls (LLM proxies, etc.)
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    ca-certificates \
-  && rm -rf /var/lib/apt/lists/*
-
-# Create a non-root user
-RUN useradd -m appuser
-
-# Wheels
-COPY --from=builder /wheels /wheels
+# ---------- Install dependencies ----------
 COPY requirements.txt .
-RUN pip install --no-cache-dir --find-links=/wheels -r requirements.txt && \
-    rm -rf /wheels
+RUN pip install --no-cache-dir -r requirements.txt \
+    && pip install --no-cache-dir supervisor
 
-# App code
+# ---------- Copy source ----------
 COPY . .
-# Allow non-root writes if app writes logs/db files
-RUN chown -R appuser:appuser /app
 
 # ---------- Metadata & Healthcheck ----------
-LABEL org.opencontainers.image.title="nl2sql-copilot" \
-      org.opencontainers.image.description="Modular Text-to-SQL Copilot (FastAPI)" \
-      org.opencontainers.image.source="https://github.com/melika-kheirieh/nl2sql-copilot" \
-      org.opencontainers.image.authors="melika.kheirieh" \
-      org.opencontainers.image.licenses="MIT"
-
-HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \
-  CMD python -c "import urllib.request, sys; \
-  sys.exit(0) if urllib.request.urlopen('http://127.0.0.1:8000/healthz', timeout=2).getcode() == 200 else sys.exit(1)"
-
-USER appuser
+LABEL maintainer="melika kheirieh"
+LABEL description="NL2SQL Copilot full stack (FastAPI + Gradio)"
+
+# lightweight healthcheck without curl
+HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
+  CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/healthz')" || exit 1
+
+# ---------- Supervisor config ----------
+RUN echo "[supervisord]" > /etc/supervisord.conf \
+ && echo "nodaemon=true" >> /etc/supervisord.conf \
+ && echo "" >> /etc/supervisord.conf \
+ && echo "[program:fastapi]" >> /etc/supervisord.conf \
+ && echo "command=uvicorn main:app --host 0.0.0.0 --port 8000" >> /etc/supervisord.conf \
+ && echo "autostart=true" >> /etc/supervisord.conf \
+ && echo "" >> /etc/supervisord.conf \
+ && echo "[program:gradio]" >> /etc/supervisord.conf \
+ && echo "command=python app.py" >> /etc/supervisord.conf \
+ && echo "autostart=true" >> /etc/supervisord.conf
+
+# ---------- Ports ----------
+EXPOSE 7860
 EXPOSE 8000
 
-CMD ["sh", "-c", "uvicorn app.main:app --host 0.0.0.0 --port 8000 --proxy-headers --workers ${UVICORN_WORKERS:-1}"]
+# ---------- Entrypoint ----------
+CMD ["supervisord", "-c", "/etc/supervisord.conf"]

README.md

@@ -1,11 +1,10 @@
 ---
-title: NL2SQL Copilot — Mock Demo
+title: NL2SQL Copilot — Full Stack Demo
 emoji: 🧩
 colorFrom: indigo
 colorTo: blue
-sdk: gradio
-app_file: app/main.py
-python_version: "3.10"
+sdk: docker
+python_version: "3.12"
 pinned: false
 ---
 # 🧩 NL2SQL Copilot

demo/app.py

@@ -4,9 +4,13 @@ import os
 import json
 from pathlib import Path
 
+# Prefer internal backend when running inside Docker
+API_HOST = os.getenv("API_HOST", "localhost")
+API_PORT = os.getenv("API_PORT", "8000")
+
 USE_MOCK = os.environ.get("USE_MOCK", "0") == "1"
-API_UPLOAD = "http://localhost:8000/api/v1/nl2sql/upload_db"
-API_QUERY = "http://localhost:8000/api/v1/nl2sql"
+API_UPLOAD = f"http://{API_HOST}:{API_PORT}/api/v1/nl2sql/upload_db"
+API_QUERY = f"http://{API_HOST}:{API_PORT}/api/v1/nl2sql"
 
 HARDCODED_MOCK = {
     "sql": "SELECT name, country FROM singer WHERE age > 20;",