@vieux Inject or insert? If insert, it is a behavior change because insert used to shit in your terminal:

 ```
$ docker insert 8dbd9 https://www.docker.io/static/img/docker-top-logo.png /foo

5765ac1d7336c1d805f04e745b7fdc9583bb23202a825c6e26c933b636a357cd
5765ac1d7336: 

$ 
```