Building Enterprise JavaScript Applications

Workflow

So, what's a typical workflow for running a program (or programs) inside a container?

First, you'd specify the setup of your environment and application inside a Dockerfile, where each line is a step in the setup process:

FROM node:8RUN yarnRUN yarn run buildCMD node dist/index.js

Then, you’d actually carry out the steps specified in the Dockerfile to generate an image. An image is a static, immutable file that contains the executable code of our application. The image is self-contained and includes our application code, as well as all of its dependencies such as system libraries and tools.

Then, you'd use Docker to run the image. A running instance of an image is a container. Your application runs inside that container.

By analogy, ...