docs: add examples of ImageExt
usage and cover GenericImage
#747
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I struggled a bit when upgrading to testcontainers-rs 0.23, since the interfaces had changed somewhat since the last version I used. The documentation didn't explain exactly how to use the methods in
ImageExt
in conjunction with those ofGenericImage
.This change adds a bit more content to the documentation:
ImageExt
,GenericImage
showing how it is used along withImageExt
.The latter in particular includes a doctest. If the API is changed in the future so that further changes are needed, the doctest will fail and can be updated accordingly. This will make it easier for downstream users to understand how to port their code.