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by why-el 3981 days ago
Is your application just a jar? In the yes case your conclusion is correct.

Throw in a database, a cache server, couple of versioned libraries your jar file needs, and more developers, and suddenly a reproducible image with all this packaged will make a lot of sense.
2 comments
emergentcypher 3981 days ago
Our build process already includes the application's dependencies inside the jar, and packages it into an installable deb file that places the app, its config, and the init file in the right locations.

I have a database and a cache server. They don't run on the same server as the application jar... they run on separate machines tuned to their purpose. Why would I want them packaged together? So my team doesn't have to run "apt-get install postgresql" on their dev machines? Or to maintain an exactly consistent dev environment?

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regularfry 3981 days ago
In that instance, docker doesn't buy you much over vagrant. Docker stands to win where you've got 15 different apps which all need to come up together so you can QA the combined set of services in a single VM on a tester's desktop.
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