Allow single character glob pattern '?' in tags

[plexoos]

It would be nice if the script processing the docker_images.txt file could also deal with single character glob pattern '?' in addition to '*'.

For example, we might have the following tags in the registry:

image:v1-compiler1, image:v1
image:v1-compiler2
image:v2-compiler1
image:v2-compiler2, image:v2

where image:v1 and image:v2 are aliases to our default images built with the corresponding compiler (or OS). Now, if we wanted to export only the short alias tags we could specify in docker_images.txt something like this:

image:v?

My understanding is that if we use image:v* then all tags will be exported which is undesirable.