Dockerfile

FROM oven/bun:1 as base
WORKDIR /usr/src/app

# Install node - otherwise, for some reason, it won't build
RUN set -uex; \
    apt-get update; \
    apt-get install -y ca-certificates curl gnupg; \
    mkdir -p /etc/apt/keyrings; \
    curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key \
     | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg; \
    NODE_MAJOR=20; \
    echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$NODE_MAJOR.x nodistro main" \
     > /etc/apt/sources.list.d/nodesource.list; \
    apt-get -qy update; \
    apt-get -qy install nodejs;

# 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 . .
RUN bun run build

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

# run the app
RUN adduser --disabled-password --gecos '' bun || true
RUN chown -R bun:bun /usr/src/app
USER bun
ENV NODE_ENV=production
EXPOSE 3000
ENTRYPOINT [ "bun", "run", "serve" ]