Add Docker deployment support

Dockerfile

@@ -0,0 +1,27 @@
+FROM node:20-alpine AS base
+WORKDIR /app
+ENV NEXT_TELEMETRY_DISABLED=1
+
+FROM base AS deps
+COPY package.json package-lock.json ./
+RUN npm ci
+
+FROM base AS builder
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+RUN npm run build
+
+FROM node:20-alpine AS runner
+WORKDIR /app
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+ENV PORT=3000
+ENV HOSTNAME=0.0.0.0
+
+COPY --from=builder /app/public ./public
+COPY --from=builder /app/.next/standalone ./
+COPY --from=builder /app/.next/static ./.next/static
+
+EXPOSE 3000
+
+CMD ["node", "server.js"]