Adding labels to images with ctr
is easy, but reading them is not so much.
Try ctr image ls
- you'll see an image called registry.iximiuz.com/tricky-one:latest
.
This image has a certain label that you need to read.
Write the label value to the /tmp/tricky-label.txt
file.
Hint 1 💡
There is likely no out-of-the-box command to read image labels in ctr
.
You'll have to be creative while solving this challenge.
Hint 2 💡
Image labels is an important part of image metadata, so when you move images around, the labels are always preserved.
Hint 3 💡
Can you think of a way to save the image to a certain artifact on the filesystem?
Hint 4 💡
OCI Image Layout specification is your friend.
Or just go and check every file in the tar archive ctr image export
produces - in this particular case,
there won't be too many.
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