feat: initial emdash setup with Docker + QNAP config

Dockerfile

@@ -0,0 +1,45 @@
+# ── Stage 1: Build ──────────────────────────────────────────────
+FROM node:22-alpine AS builder
+
+WORKDIR /app
+
+# Install build dependencies for better-sqlite3 (native addon)
+RUN apk add --no-cache python3 make g++
+
+COPY package.json package-lock.json ./
+RUN npm ci
+
+COPY . .
+RUN npm run build
+
+# ── Stage 2: Runtime ────────────────────────────────────────────
+FROM node:22-slim
+
+WORKDIR /app
+
+# better-sqlite3 needs shared libs available in slim
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    tini \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy built output and production node_modules
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/node_modules ./node_modules
+COPY --from=builder /app/package.json ./
+
+# Create directories for persistent data
+RUN mkdir -p /data /uploads && chown -R node:node /data /uploads /app
+
+USER node
+
+ENV HOST=0.0.0.0
+ENV PORT=4321
+ENV DATABASE_PATH=/data/emdash.db
+ENV UPLOAD_DIR=/uploads
+
+EXPOSE 4321
+
+VOLUME ["/data", "/uploads"]
+
+ENTRYPOINT ["tini", "--"]
+CMD ["node", "./dist/server/entry.mjs"]