feature request: expand "Customizing Image Pull Behavior" to include a "platform" override

[alexanderankin]

In the "Customizing Image Pull Behavior" section:

https://java.testcontainers.org/features/configuration/#customizing-image-pull-behaviour

there is an ability to to specify the behavior of timeouts while pulling.

There is also "pull.policy" which is not documented here but only in another place (https://java.testcontainers.org/features/advanced_options/#image-pull-policy)

the idea is to add a "pull.platform" or "pull.default-platform" or something which will override the platform detected normally with the one given as a property.

and document it in this section.

pros:

satisfy the needs described here - #3810 (comment)

cons:

potentially a satisfactory solution can be contained in user code as here - https://java.testcontainers.org/features/advanced_options/#using-createcontainercmdmodifier

conclusion:

purpose of this issue is to determine whether or not this addition is welcome as it seems to solve a need based on the other thread (linked in pros section)