Some test cases might need an ability to execute a command inside a
container (in order to analyse its output and/or exit code). It is a bit
complicated operation to do so using engine API. The function provided
aims to hide this complexity, making exec almost as simple as 'docker
exec'.
NOTE that the exec is synchronous, and command's stdin is closed.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
To help creating/running/… containers using the client for test integration.
This should make test more readable and reduce duplication a bit.
Usage example
```
// Create a default container named foo
id1 := container.Create(t, ctx, client, container.WithName("foo"))
// Run a default container with a custom command
id2 := container.Run(t, ctx, client, container.WithCmd("echo", "hello world"))
```
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Both names have no real sense, but one allows to make sure these packages
aren't used outside of `integration`.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Kir Kolyshkin