What is the image of the `web` service using `docker-compose -f docker-compose.dev.yml up`?

Question

Consider the following `docker-compose.base.yml` file:
```yaml
services:
  web:
    image: nginx:latest
```

And the `docker-compose.dev.yml` file:

```yaml
services:
  web:
    extends:
      file: docker-compose.base.yml
      service: web
    environment:
      - ENV=development
```

What will be the image of the `web` service using `docker-compose -f docker-compose.dev.yml up`?

Accepted Answer

`nginx:latest`

Answer

`nginx:development`

Answer

`web`

Answer

No images will be used

Question from the Docker compose test