Source: 📖 Django for Professionals ch2 p33

Rebuild image after installing a package on Docker

After installing a new package on Docker, the image must be re-built to force Docker to use the new Pipfile and Pipfile.lock. To do this, first stop active containers and then run the docker-compose up -d command again with the --build flag.

$ docker-compose down
$ docker-compose up -d --build