I have encountered a problem a few days ago and it drives me crazy. I have few services running on gitlab-ci.
A few days ago when, i tried to i run "docker-compose pull" or "docker pull image:version" and it failed. The weird thing is that nothing changed and it worked so far. For some services it says pull access denied because it requires docker login or repository does not exist. I run docker login before making pull, images exist and repository too. I don’t understand. This is what happens when I run docker-pull compose. Docker pull is a success for some of them.
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Source: Docker Questions