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What is there to gain by putting your database in a container? A database probably has its own dedicated server so, your probably not deploying databases often and there's the added complexity of making your data persistent.

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Your point stands, and obviously makes more sense.

My curiosity was more in whether there were performance (or other) bottlenecks which made it technically infeasible.

I run my production database in a container, even if it has its own dedicated server. It's nice being able to install, start and initialize the database with a simple docker command or two to get a consistent build, instead of manually setting it up (copying/editing configuration files, deploying schemas, initializing data, setting permissions, etc.) And it makes upgrading the database very easy. Having this process automated and in source control is great. I also have the awesome ability to bundle cron in my database container to schedule regular backups. Persisting data is as simple as mounting a data volume.

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