Allow to use ImageFromDockerfile with deleteOnExit=false

[oboudet-beetween]

Is your feature request related to a problem? Please describe.

I have an image which is relatively slow to build. I would like to use docker cache for the many layers my image have.
TestContainers allows to set deleteOnExit to false, but i don't see a way to set it whith microshed-testcontainers.

[KyleAure]

@oboudet-beetween Thanks for your suggestion.

I assume you are referring to the ApplicationContainer class which has the following logic:

microshed-testing/modules/testcontainers/src/main/java/org/microshed/testing/testcontainers/ApplicationContainer.java

Lines 112 to 118 in d2e4003

	} else if (dockerfile.isPresent()) {
	if (!Files.exists(dockerfile.get()))
	throw new ExtensionConfigurationException("Dockerfile did not exist at: " + dockerfile.get());
	ImageFromDockerfile image = new ImageFromDockerfile("testcontainers/mpapp-" + Base58.randomString(10).toLowerCase());
	image.withDockerfile(dockerfile.get());
	image.setBaseDirectory(Paths.get("."));
	return image;

Where we should have a builder method like withDeleteOnExit(boolean delete)
And then set the deleteOnExit parameter of the ImageFromDockerfile instance.

I think this would be a great enhancement. If you are interested I would be happy to accept a pull request to add this enhancement. Otherwise, I can work on getting it added as I have time.

[oboudet-beetween]

Thanks for your feedback, you are right, I am talking about ApplicationContainer.
I can try to send you a PR when I will have some time :)