webapp.dockerfile

# Step 1: Use the official Bun image
FROM node:lts-slim AS base
RUN npm i -g bun@latest
WORKDIR /usr/src/app

# install dependencies into temp directory
# this will cache them and speed up future builds
FROM base AS install
RUN mkdir -p /temp/dev
COPY package.json bun.lockb /temp/dev/
RUN --mount=type=cache,target=/root/.bun/install/cache cd /temp/dev && bun install --frozen-lockfile


# copy node_modules from temp directory
# then copy all (non-ignored) project files into the image
FROM base AS builder
WORKDIR /app
COPY . .
COPY --from=install /temp/dev/node_modules node_modules

# Run bun run build to build the application
ARG NEXT_PUBLIC_APP_URL=http://localhost:3000
ENV NEXT_PUBLIC_APP_URL=$NEXT_PUBLIC_APP_URL
ENV NEXT_TELEMETRY_DISABLED=1
RUN bun run build


# Production image, copy all the files and run next
FROM base AS runner
WORKDIR /app

ENV NODE_ENV production
# Uncomment the following line in case you want to disable telemetry during runtime.
# ENV NEXT_TELEMETRY_DISABLED 1

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

COPY --from=builder /app/public ./public

# Automatically leverage output traces to reduce image size
# https://nextjs.org/docs/advanced-features/output-file-tracing
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

USER nextjs

EXPOSE 3000

ENV PORT 3000

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