Docker & Containers

Containerizing a Next.js app.

Dockerfile

1FROM node:20-alpine AS base
2
3FROM base AS deps
4WORKDIR /app
5COPY package*.json ./
6RUN npm ci
7
8FROM base AS builder
9WORKDIR /app
10COPY --from=deps /app/node_modules ./node_modules
11COPY . .
12RUN npm run build
13
14FROM base AS runner
15WORKDIR /app
16ENV NODE_ENV=production
17COPY --from=builder /app/.next/standalone ./
18COPY --from=builder /app/.next/static ./.next/static
19COPY --from=builder /app/public ./public
20
21EXPOSE 3000
22CMD ["node", "server.js"]

Docker Compose

1version: '3.8'
2services:
3  app:
4    build: .
5    ports:
6      - "3000:3000"
7    environment:
8      - DATABASE_URL=postgresql://...

See you soon! 🚀