tvone/Dockerfile

# syntax=docker.io/docker/dockerfile:1

############################
# Base image
############################
FROM node:22-alpine AS base
WORKDIR /app


############################
# Dependencies
############################
FROM base AS deps

RUN apk add --no-cache libc6-compat

# Copy package files
COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* .npmrc* ./

# Install dependencies
RUN \
  if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
  elif [ -f package-lock.json ]; then npm ci; \
  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i --frozen-lockfile; \
  else echo "Lockfile not found." && exit 1; \
  fi


############################
# Builder
############################
FROM base AS builder
WORKDIR /app

COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Disable telemetry during build (optional)
ENV NEXT_TELEMETRY_DISABLED=1

# Build Next.js app
RUN \
  if [ -f yarn.lock ]; then yarn build; \
  elif [ -f package-lock.json ]; then npm run build; \
  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm build; \
  else echo "Lockfile not found." && exit 1; \
  fi


############################
# Runner (production)
############################
FROM node:22-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

RUN addgroup --system --gid 1001 nodejs \
  && adduser --system --uid 1001 nextjs

# Copy standalone build and static files
COPY --from=builder /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# 1. Create the specific cache directory Next.js is looking for
# 2. Give ownership to the 'nextjs' user
RUN mkdir -p /app/.next/cache/images && chown -R nextjs:nodejs /app/.next

USER nextjs

EXPOSE 3000
ENV PORT=3000
ENV HOSTNAME=0.0.0.0

CMD ["node", "server.js"]