Dockerfile

# syntax=docker/dockerfile:1

##### BASE
FROM --platform=linux/amd64 node:20-alpine AS base
RUN apk add --no-cache libc6-compat openssl
WORKDIR /app
ENV PNPM_HOME="/pnpm"
ENV PATH="$PNPM_HOME:$PATH"
RUN corepack enable

##### DEPS
FROM base AS deps
ARG DATABASE_URL="postgresql://placeholder:placeholder@localhost:5432/placeholder"
ENV DATABASE_URL=${DATABASE_URL}
COPY prisma ./prisma
COPY package.json pnpm-lock.yaml* package-lock.json* yarn.lock* ./
RUN \\
  if [ -f pnpm-lock.yaml ]; then pnpm install --frozen-lockfile; \\
  elif [ -f yarn.lock ]; then yarn --frozen-lockfile; \\
  elif [ -f package-lock.json ]; then npm ci; \\
  else echo "Lockfile not found." && exit 1; \\
  fi

##### BUILDER
FROM base AS builder
ARG DATABASE_URL="postgresql://placeholder:placeholder@localhost:5432/placeholder"
ARG NEXT_PUBLIC_CLIENTVAR="clientvar"
ENV DATABASE_URL=${DATABASE_URL}
ENV NEXT_PUBLIC_CLIENTVAR=${NEXT_PUBLIC_CLIENTVAR}
ENV SKIP_ENV_VALIDATION=1
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY --from=deps /app/prisma ./prisma
COPY --from=deps /app/generated ./generated
COPY . .
RUN \\
  if [ -f pnpm-lock.yaml ]; then pnpm run build; \\
  elif [ -f yarn.lock ]; then yarn build; \\
  elif [ -f package-lock.json ]; then npm run build; \\
  else echo "Lockfile not found." && exit 1; \\
  fi

##### RUNNER
FROM --platform=linux/amd64 node:20-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
ENV PORT=3000
RUN addgroup --system --gid 1001 nodejs \\
  && adduser --system --uid 1001 nextjs
COPY --from=builder /app/next.config.js ./next.config.js
COPY --from=builder /app/public ./public
COPY --from=builder /app/package.json ./package.json
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
COPY --from=builder --chown=nextjs:nodejs /app/generated ./generated
USER nextjs
EXPOSE 3000
CMD ["node", "server.js"]

Must setup AUTH_URL and AUTH_TRUST_HOST=true

AUTH_TRUST_HOST=true AUTH_URL=https://t3.example.com/api/auth