Painless Docker - 2nd Edition

Docker Compose with Bind Mounts

It's common to use bind mounts when developing an application. The developer, on their local machine, will usually have the source code of the application in a working directory, and they mount that directory to the container so that any changes made to the source code on the host using their IDE will be reflected inside the container automatically. This helps the developer keep their development environment and habits while using Docker containers for development. If the image used is the same as the production image, the developer can have more confidence that the application will work in production as it works in their local development environment (it's more complex than that in reality, but this is the general idea).

services:
  web:
    build: .
    ports: