Have you ever worked with Docker?

Yes, I have worked with Docker. I used it for containerizing frontend applications, which allows creating isolated and reproducible environments for development and deployment.

For example, you can build an image with Node.js and all dependencies to run the application consistently on different machines:

FROM node:16-alpine
WORKDIR /app
COPY package.json yarn.lock ./
RUN yarn install --frozen-lockfile
COPY . .
CMD ["yarn", "start"]

Docker helps simplify environment setup and speeds up the development and testing process.