Make Ryuk image version public

[MaQy]

Hi, is there any chance this image name could be made public?

    private static readonly IImage RyukImage = new DockerImage("testcontainers/ryuk:0.12.0");

I need to point to my mirror registry, by replacing the default image in TestcontainersSettings.ResourceReaperImage, but right now I have to either hardcode the version or use reflection.

Thanks!

[HofmeisterAn]

You can configure this by setting custom configurations either through an environment variable (TESTCONTAINERS_RYUK_CONTAINER_IMAGE) or the ~/.testcontainers.properties file (ryuk.container.image).

There's also the TESTCONTAINERS_HUB_IMAGE_NAME_PREFIX configuration, which lets you substitute the Docker Hub registry. Setting this will automatically prepend the value to all image names (as registry/host).

Setting TESTCONTAINERS_HUB_IMAGE_NAME_PREFIX to myregistry.azurecr.io automatically changes WithImage("alpine:3") to myregistry.azurecr.io/alpine:3 internally.

I'll update the docs regarding this too.

[MaQy]

Hi, yes, I'm familiar with prefix, but I didn't want to apply a global prefix to all my images as I use several registries. Ideally, if the version rather than being a hardcoded string, was a public constant, I could just put my own prefix only for the Ryuk image. Is there any concern in making it public? As far as I can see, it's a duplicated value for the tests for this very reason:

testcontainers-dotnet/tests/Testcontainers.Commons/CommonImages.cs

Line 6 in 0d70d46

public static readonly IImage Ryuk = new DockerImage("testcontainers/ryuk:0.12.0");

Thanks in any case for pointing me to the prefix. This is my workaround for now.

[HofmeisterAn]

Is there any concern in making it public?

You are referring to the version TC uses internally by default? Like:

testcontainers-dotnet/src/Testcontainers/Containers/ResourceReaper.cs

Line 36 in 0d70d46

private static readonly IImage RyukImage = new DockerImage("testcontainers/ryuk:0.12.0");

[MaQy]

Yes, exactly. If possible, I would like to have that string (testcontainers/ryuk:0.12.0) as a public constant. Or even only the version would be fine.

[HofmeisterAn]

What's the purpose? To set TestcontainersSettings.ResourceReaperImage again and point it to a different registry?

[MaQy]

As far as I can see, TestcontainersSettings.ResourceReaperImage is not populated unless you set it manually. If null, it uses what you shared above:

testcontainers-dotnet/src/Testcontainers/Containers/ResourceReaper.cs

Line 36 in 0d70d46

private static readonly IImage RyukImage = new DockerImage("testcontainers/ryuk:0.12.0");

I want to set the value of TestcontainersSettings.ResourceReaperImage to <MyRegistry>/testcontainers/ryuk:0.12.0, but I would like to avoid hardcoding ryuk:0.12.0 if possible, so I don't need to check if it changed next time I upgrade Tescontainers.