chore: переход на static export + nginx для деплоя

Конфигурация совместима с Gitea CI/CD инфраструктурой:
- Static export вместо standalone Node.js
- Nginx для раздачи статики
- Docker multi-stage build

Co-authored-by: Cursor <cursoragent@cursor.com>

Dockerfile

@@ -1,44 +1,11 @@
-FROM node:20-alpine AS base
-
-# Install dependencies only when needed
-FROM base AS deps
+FROM node:22-alpine AS build
 WORKDIR /app
-
 COPY package.json package-lock.json ./
-RUN npm ci --only=production
-
-# Rebuild the source code only when needed
-FROM base AS builder
-WORKDIR /app
-COPY --from=deps /app/node_modules ./node_modules
+RUN npm ci
 COPY . .
-
 RUN npm run build
 
-# Production image, copy all the files and run next
-FROM base AS runner
-WORKDIR /app
-
-ENV NODE_ENV=production
-
-RUN addgroup --system --gid 1001 nodejs
-RUN adduser --system --uid 1001 nextjs
-
-COPY --from=builder /app/public ./public
-
-# Set the correct permission for prerender cache
-RUN mkdir .next
-RUN chown nextjs:nodejs .next
-
-# Automatically leverage output traces to reduce image size
-COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
-COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
-
-USER nextjs
-
-EXPOSE 3000
-
-ENV PORT=3000
-ENV HOSTNAME="0.0.0.0"
-
-CMD ["node", "server.js"]
+FROM nginx:alpine
+COPY docker/nginx.conf /etc/nginx/conf.d/default.conf
+COPY --from=build /app/out /usr/share/nginx/html
+EXPOSE 80