build docker via gitlab

Dockerfile

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+FROM node:20-alpine
+
+RUN apk add --no-cache git bash build-base curl
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci
+
+COPY . .
+
+# Buat config agar Next tahu output: export
+RUN echo "const config = { output: 'export', images: { unoptimized: true } }; export default config;" > next.config.mjs
+
+# Build project (Next.js 15 otomatis static export)
+RUN NEXT_DISABLE_TURBOPACK=1 npx next build
+
+# Pastikan folder static tersedia untuk URL _next/static
+RUN mkdir -p .next/server/app/_next && \
+    cp -r .next/static .next/server/app/_next/static && \
+    cp -r public/assets .next/server/app/
+
+EXPOSE 3000
+CMD ["npx", "serve", ".next/server/app", "-l", "3000"]