fix: remove standalone output, run next start in Docker

.dockerignore

@@ -0,0 +1,9 @@
+.next
+node_modules
+.git
+.env.local
+.env.*.local
+npm-debug.log*
+*.log
+test-results
+playwright-report

Dockerfile

@@ -0,0 +1,22 @@
+FROM node:22-alpine AS builder
+WORKDIR /app
+ENV NODE_ENV=development
+COPY package*.json ./
+RUN npm ci
+COPY . .
+ENV NEXT_TELEMETRY_DISABLED=1
+RUN npm run build
+
+FROM node:22-alpine AS runner
+WORKDIR /app
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+
+COPY --from=builder /app/package*.json ./
+COPY --from=builder /app/.next ./.next
+COPY --from=builder /app/public ./public
+COPY --from=builder /app/node_modules ./node_modules
+
+EXPOSE 3000
+ENV PORT=3000
+CMD ["node_modules/.bin/next", "start"]