adding backup and data perstance accross devices

Dockerfile

@@ -0,0 +1,35 @@
+# ── Stage 1: Build the Vite frontend ────────────────────────────────────────
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+
+COPY . .
+RUN npm run build
+
+# ── Stage 2: Production image ────────────────────────────────────────────────
+FROM node:20-alpine
+
+WORKDIR /app
+
+# Copy package files and install production deps only
+COPY package*.json ./
+RUN npm ci --omit=dev
+
+# Copy built frontend and server source
+COPY --from=builder /app/dist ./dist
+COPY server/ ./server/
+
+# SQLite data directory — mount a volume here for persistence
+# e.g. docker run -v /your/host/path:/app/server/data ...
+RUN mkdir -p /app/server/data
+
+EXPOSE 3001
+
+ENV NODE_ENV=production
+ENV PORT=3001
+# Override DATA_DIR if you mount the volume elsewhere
+ENV DATA_DIR=/app/server/data
+
+CMD ["node", "server/index.js"]