pnpm workspaceのモノレポをマルチステージビルドするにはturbo pruneがよい

.
├── apps
│   ├── app1
│   └── app2
├── packages
│   └── utils
├── package.json
├── pnpm-lock.yaml
├── pnpm-workspace.yaml
└── tsconfig.json

Dockerfile

FROM node:20-slim AS base
ENV PNPM_HOME="/pnpm"
ENV PATH="$PNPM_HOME:$PATH"
RUN corepack enable

FROM base AS base-builder
WORKDIR /app
COPY . .
RUN pnpm install -g turbo

FROM base-builder AS app1-builder
RUN turbo prune app1 --docker

FROM base-builder AS app2-builder
RUN turbo prune app2 --docker

FROM base AS app1-installer
WORKDIR /app
COPY --from=app1-builder /app/out/json/ .
COPY --from=app1-builder /app/out/pnpm-lock.yaml ./pnpm-lock.yaml
RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
COPY --from=app1-builder /app/out/full/ .

COPY --from=app1-builder /app/tsconfig.json ./tsconfig.json

RUN pnpm build

FROM base AS app2-installer
WORKDIR /app
COPY --from=app2-builder /app/out/json/ .
COPY --from=app2-builder /app/out/pnpm-lock.yaml ./pnpm-lock.yaml
RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
COPY --from=app2-builder /app/out/full/ .
COPY --from=app2-builder /app/tsconfig.json ./tsconfig.json
RUN pnpm build

FROM base AS app1
WORKDIR /app
COPY --from=app1-installer /app/ .
WORKDIR /app/apps/app1
EXPOSE 8000
CMD ["pnpm", "start"]

FROM base AS app2
WORKDIR /app
COPY --from=app2-installer /app/ .
WORKDIR /app/apps/app2
EXPOSE 8001
CMD ["pnpm", "start"]