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https://issues.apache.org/jira/browse/MESOS-1886?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14492619#comment-14492619
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Craig W commented on MESOS-1886:
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Looks like it's part of the DockerInfo [1] which is nested in ContainerInfo.
[1]
https://github.com/apache/mesos/blob/master/include/mesos/mesos.proto#L1010-L1044
> Allow docker pull on each run to be configurable
> ------------------------------------------------
>
> Key: MESOS-1886
> URL: https://issues.apache.org/jira/browse/MESOS-1886
> Project: Mesos
> Issue Type: Improvement
> Components: containerization
> Affects Versions: 0.20.1
> Reporter: Chris Heller
> Assignee: Timothy Chen
> Priority: Minor
> Labels: docker
>
> With 0.20.1 the behavior of a docker container has changed (see MESOS-1762).
> This change brings the docker behavior more in line with that of {{docker
> run}}.
> I propose,if the image given explicitly has the ":latest" tag, this should
> signify to mesos that an unconditional `docker pull` should be done on the
> image... and if it should fail for any reason (i.e. the registry is
> unavailable) we fall back to the current behavior.
> This would break slightly with the semantics of how the docker command line
> operates, but the alternative is to require explicit tags on every release --
> which is a hinderance when developing a new image, or one must log in to each
> node and run an explicit `docker pull`.
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