Dockerfile

# Use the official Bun image
# See all versions at https://hub.docker.com/r/oven/bun/tags
FROM oven/bun:canary-alpine as base
WORKDIR /usr/src/app

# Install dependencies into the 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 the 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 . .

# Copy production dependencies and source code into the final image
FROM base AS release
COPY --from=install /temp/prod/node_modules node_modules
COPY --from=prerelease /usr/src/app/ .

# Run the app
USER bun
EXPOSE 3000/tcp
ENTRYPOINT ["bun", "run", "index.ts"]