Docker image ids as test inputs

build.gradle.kts

tasks.named("e2eTest") {
    val dockerImageIdsProvider = providers.provider {
        val dockerImageIds = mutableMapOf<String,String>()
        layout.projectDirectory.file("src/test/resources/docker-images.txt").asFile.forEachLine { dockerImageName ->
            val dockerImageId = providers.exec {
                commandLine("docker", "images", dockerImageName, "--format", "{{.ID}}")
            }.standardOutput.asText.getOrElse("not-found-${UUID.randomUUID()}")
            logger.info("Adding input $dockerImageName=$dockerImageId")
            dockerImageIds.put(dockerImageName,dockerImageId)
        }
        dockerImageIds
    }
    dockerImageIdsProvider.get().forEach {
        inputs.property("docker-image-id-${it.key}", it.value)
    }
}