Dockerfile for Sveltekit with pnpm

Dockerfile

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

FROM base AS prod-deps
RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile

FROM base AS build
RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
RUN pnpm run check
RUN pnpm run build

FROM base
COPY --from=prod-deps /app/node_modules /app/node_modules
COPY --from=build /app/.svelte-kit /app/.svelte-kit
CMD [ "pnpm", "run", "preview" ]