This fix adds several improvement:
1. No need for explicit ContainerRemove as it has been handled in setupTest()
2. Added `container.WithImage` helper function and used it in commit tests.
Signed-off-by: Yong Tang <yong.tang.github@outlook.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>
