Dockerfile

# syntax=docker/dockerfile:1.7

# ---------- deps (build on native GitHub CPU, not ARM emulation) ----------
FROM --platform=$BUILDPLATFORM node:20-alpine AS deps
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci

# ---------- builder ----------
FROM --platform=$BUILDPLATFORM node:20-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build

# ---------- runtime (actual ARM container for your Oracle VM) ----------
FROM --platform=$TARGETPLATFORM node:20-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production

# copy minimal runtime from Next standalone output
COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static
COPY --from=builder /app/public ./public

EXPOSE 3000
CMD ["node", "server.js"]