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c776c25b59
This PR updates all example Dockerfiles that were using `node:18-alpine` to `node:20-alpine` to align with current LTS and address known issues in Node 18 images. - examples/with-docker/Dockerfile - examples/with-docker-compose/next-app/prod.Dockerfile - examples/with-docker-compose/next-app/dev.Dockerfile - examples/with-docker-multi-env/docker/development/Dockerfile - examples/with-docker-multi-env/docker/production/Dockerfile - examples/with-docker-multi-env/docker/staging/Dockerfile I verified local builds for each example. No behavior changes; docs/examples only. https://github.com/vercel/next.js/issues/78465 --------- Co-authored-by: Joseph <[email protected]>
76 lines
2.5 KiB
Docker
76 lines
2.5 KiB
Docker
# syntax=docker.io/docker/dockerfile:1
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FROM node:20-alpine AS base
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# Step 1. Rebuild the source code only when needed
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FROM base AS builder
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WORKDIR /app
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# Install dependencies based on the preferred package manager
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COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* .npmrc* ./
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# Omit --production flag for TypeScript devDependencies
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RUN \
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if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
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elif [ -f package-lock.json ]; then npm ci; \
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elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i; \
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# Allow install without lockfile, so example works even without Node.js installed locally
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else echo "Warning: Lockfile not found. It is recommended to commit lockfiles to version control." && yarn install; \
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fi
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COPY src ./src
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COPY public ./public
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COPY next.config.js .
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COPY tsconfig.json .
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# Environment variables must be present at build time
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# https://github.com/vercel/next.js/discussions/14030
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ARG ENV_VARIABLE
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ENV ENV_VARIABLE=${ENV_VARIABLE}
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ARG NEXT_PUBLIC_ENV_VARIABLE
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ENV NEXT_PUBLIC_ENV_VARIABLE=${NEXT_PUBLIC_ENV_VARIABLE}
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# Next.js collects completely anonymous telemetry data about general usage. Learn more here: https://nextjs.org/telemetry
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# Uncomment the following line to disable telemetry at build time
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# ENV NEXT_TELEMETRY_DISABLED 1
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# Build Next.js based on the preferred package manager
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RUN \
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if [ -f yarn.lock ]; then yarn build; \
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elif [ -f package-lock.json ]; then npm run build; \
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elif [ -f pnpm-lock.yaml ]; then pnpm build; \
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else npm run build; \
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fi
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# Note: It is not necessary to add an intermediate step that does a full copy of `node_modules` here
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# Step 2. Production image, copy all the files and run next
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FROM base AS runner
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WORKDIR /app
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# Don't run production as root
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RUN addgroup --system --gid 1001 nodejs
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RUN adduser --system --uid 1001 nextjs
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USER nextjs
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COPY --from=builder /app/public ./public
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# Automatically leverage output traces to reduce image size
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# https://nextjs.org/docs/advanced-features/output-file-tracing
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COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
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COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
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# Environment variables must be redefined at run time
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ARG ENV_VARIABLE
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ENV ENV_VARIABLE=${ENV_VARIABLE}
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ARG NEXT_PUBLIC_ENV_VARIABLE
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ENV NEXT_PUBLIC_ENV_VARIABLE=${NEXT_PUBLIC_ENV_VARIABLE}
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# Uncomment the following line to disable telemetry at run time
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# ENV NEXT_TELEMETRY_DISABLED 1
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# Note: Don't expose ports here, Compose will handle that for us
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CMD ["node", "server.js"]
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