FROM oven/bun:1 AS base
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 cd /temp/dev && bun install --frozen-lockfile

# install with --production (exclude devDependencies)
RUN mkdir -p /temp/prod
COPY package.json bun.lockb /temp/prod/
RUN cd /temp/prod && bun install --frozen-lockfile --production

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

# build
ENV NODE_ENV=production
#RUN bun test
RUN bun run build-remote

# copy production dependencies and source code into final image 
# and run with node to avoid some random issues with bun
# (e.g. bun's fetch doesn't support dispatchers)
FROM node:20-slim AS release
WORKDIR /usr/src/app
COPY --from=install /temp/prod/node_modules node_modules
COPY --from=prerelease /usr/src/app/dist ./dist
COPY --from=prerelease /usr/src/app/package.json ./

USER node
EXPOSE 4321
ENTRYPOINT ["node", "./dist/server/entry.mjs"]