createDockerfile if existing is always up to date

[Vad1mo]

I am not sure if this is gradle-docker-plugin or a gradle thing.

When generating a Dockerfile gradle createDockerfile

task createDockerfile(type: Dockerfile) {
...

and later adding an additional entry to the task and call createDockerfile again without clean then it says that the docker file is :createDockerfile UP-TO-DATE

[bmuschko]

Sounds to me like this is a bug in my code. Can you provide a minimalistic example? Just the task definitions is good enough.

1. How do the instructions look like on the first run?
2. What instruction did you add when the task is still marked UP-TO-DATE but shouldn't?

[Vad1mo]

first it was like this

task createDockerfile(type: Dockerfile) {
    destFile = project.file('build/Dockerfile')
    from 'jeanblanchard/busybox-java:8'
    maintainer 'me'
}

after I added "addFile" and rerun it, nothing changed

task createDockerfile(type: Dockerfile) {
    destFile = project.file('build/Dockerfile')
    from 'jeanblanchard/busybox-java:8'
    maintainer 'me'
    addFile(jar.archivePath, '/app/')
}

[bmuschko]

Thanks, I will have a look.