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Given the following setup of applications:
- App A: Docker-compose with a PostgreSQL image and a custom app image which uses that PostgreSQL image
- App B: Docker-compose with a PostgreSQL image and a custom app image which uses that PostgreSQL image
App B depends on App A, but App A could run and be tested in isolation without App B (and sometimes this is desired).
Is there a way to combine these different applications into a single Docker thing? I've read about stacks and bundles, but it's all a bit cryptic to me.
Davio
Posted 2017-08-09T10:08:43.533
Reputation: 143
That would depend on what you actually want to do. You always could just make it one image which is kind of not what you want to do. What you might just be looking for is compose from what I know about docker.
– Seth – 2017-08-09T10:31:59.560@Seth I thought that compose was used for building a single application composed of different services: such as a frontend, backend and database; here I have different (standalone) applications which happen to communicate to each other; kind of like microservices. – Davio – 2017-08-09T10:43:46.647
As you have an explicit dependency they're not just services that "happen to communicate with each other". Have a compose for App B. You could always just pull the individual image for A. Stacks and bundles are actually based on compose as you can see in the documentation.
– Seth – 2017-08-09T13:31:18.640