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Home>IT Tests>Questions>How to check that the `db` and `redis` services are running before starting the `web` service in a `docker-compose.yml` file.

Question from the Docker compose test

How to check that the `db` and `redis` services are running before starting the `web` service in a `docker-compose.yml` file.

Easy

Consider the following content in a docker-compose.yml :

services:
  web:
    image: nginx
    depends_on:
      - db
      - redis
  db:
    image: postgres
  redis:
    image: redis

In this file, what does the depends_on field do under the web service?

Author: AxelStatus: PublishedQuestion passed 46 times
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