Dockerizing NuxtJS with Bun

Background 💬

Previously, I'm using the old way to deploy my NuxtJS app into AWS EC2. Building the production locally, and then uploading it through sftp. It's because I don't understand yet about building a custom docker image

Learning by Doing ✍️

The best way to learn fast is by doing. Fortunately, I've a custom Dockerfile for my backend using AdonisJS. My friend who created it. Then I just read all the lines from that file and asked my friend what's the meaning of each line.

Thank god he understands well about docker, so he can explain it to me very well.

Time to Cook 🔥

Why Bun?

Bun is a fast JavaScript package manager. And previously I was using Yarn as my main package manager. But, Bun is faster.

First stage - Base

The first stage will be our base layer which will later on be used for other steps.

ARG NODE_IMAGE=oven/bun:1-alpine

FROM --platform=linux/amd64 $NODE_IMAGE AS base
WORKDIR /usr/src/app
RUN apk --no-cache add openssh g++ make python3 git

Second stage - Installing Dependencies

Our second stage will be used to install all dependencies, so we can build our app in later stages.

FROM base AS install
RUN mkdir -p /temp
COPY package.json bun.lockb /temp/
RUN cd /temp && bun install --frozen-lockfile

If you realize, I didn't use --production. It's because I still need to install devDependencies so I can run the nuxt command

Third stage - Build

We have everything to start our build phase! This very simple and self-explanatory stage.

FROM install AS prerelease

COPY --from=install /temp/node_modules node_modules

COPY . .

ENV NODE_ENV=production

RUN bun run build

Fourth stage - Production

Finally, we can create our last stage.

FROM base AS release

COPY --chown=bun:bun --from=install /temp/node_modules node_modules

COPY --chown=bun:bun --from=prerelease /usr/src/app/.output .

USER bun

ENV HOST 0.0.0.0

EXPOSE 3000

ENTRYPOINT [ "bun", "run", "server/index.mjs" ]

Test Locally 🤖

After I successfully built the docker image in under 5 minutes. I just need to test the docker image by running a container on my local. And I'm using Docker Desktop by the way.

Boom, it can run smoothly without any errors.