Missing Zend Expressive 3 dependencies config format

[oshdev]

As per suggestion #372 it seems that Zend Expressive uses the following format: https://github.com/gabbydgab/zend-expressive-config-provider/blob/develop/src/ConfigProvider.php#L29
Can we please have those documented or even better - if possible - create an interface(s) so we could create adapters for various container implementations with ease and perhaps include more of the popular ones to the https://github.com/zendframework/zend-expressive-skeleton installer.
For more information see https://discourse.zendframework.com/t/zend-expressive-3-dependencies-config-format/531

[geerteltink]

A good example is the dependencies.global.php in the skeleton, except it misses the delegators part.

[weierophinney]

@oshdev I can certainly document what configuration we expect to work across all implementations. However, how the implementations consume that configuration is really up to each.

We've started splitting that task into separate packages; you can see those here:

• https://github.com/zendframework/zend-auradi-config
• https://github.com/zendframework/zend-pimple-config

Ideally, we should expose these as composer plugins or to a composer plugin in order to copy artifacts into the project (e.g., to copy in the config/container.php file); we'll likely do that in the future.

In the meantime, I'll add a document detailing what config features implementors need to be compatible with.