add docker files

solarDb/Dockerfile

@@ -0,0 +1,32 @@
+# Dockerfile.api
+FROM python:3.13-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+RUN apt-get update && apt-get install -y --no-install-recommends curl \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# Install all deps from unified requirements.txt
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy API code
+COPY solarDb/ ./solarDb/
+COPY wsgi.py ./wsgi.py
+
+# Data dir for TinyDB
+RUN mkdir -p /data && chown -R 1000:1000 /data
+VOLUME ["/data"]
+
+ENV FLASK_ENV=production \
+    APP_PORT=5001 \
+    DB_PATH=/data/db.json
+
+EXPOSE 5001
+
+HEALTHCHECK --interval=30s --timeout=5s --retries=3 CMD curl -fsS http://localhost:5001/healthz || exit 1
+
+CMD ["gunicorn", "-k", "gthread", "-w", "2", "-b", "0.0.0.0:5001", "--graceful-timeout", "30", "wsgi:app"]