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Well, all docker containers are hashed and can be version tagged. If you do a pull and run the 'latest' tag, it'll always be the HEAD of the commit hash.

This is assuming you want to trust some 3rd party with the maintenance and security of your production environment.

Docker containers are, usually, just operating systems running a single logical application service. I don't think Docker promises a free Sys Admin. ;)

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My complaint is primarily that there's no mechanism to let you know "hey, there's an update to this" in the same way as apt, yum, and other systems do.

It's not about trusting a 3rd party with the maintenance and security of your production environment as much as it is "Docker should provide a way to let the people handling the maintenance of your production environment to know shit may be happening". Rebuilding from the 'latest' tag is great. If you know you have to rebuild, and that there's an update available.

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