Adding docker

[njmote]

Thank you so much for creating this app, I had a lot of fun talking with it this morning. I've included some instructions on how to get it running in Docker.

[PylotLight]

You could use bun instead potentially, it worked for me.:

FROM oven/bun:alpine

WORKDIR /usr/src/app

COPY package*.json ./
RUN bun install

COPY . .

EXPOSE 3000

CMD ["bun","--bun", "run", "dev"]

[sidrtx]

Some minor suggestions:

• If this image will be used for production, consider using npm ci instead of npm install for more reliable builds.
• And you might want to add a .dockerignore file to reduce image size by excluding files like node_modules, .git, etc.

Overall, this Dockerfile is clean, minimal, and follows best practices for a Node.js app in a development environment. Nice