Eagerly evaluate TAG, to ensure it's consistent
Eagerly evaluate TAG, to ensure it's consistent

By deferring the evaluation of TAG, we risk the date changing mid-build
leading to images from the same make invocation having different tags.

dockcross/dockcross,thewtex/cross-compilers,dockcross/dockcross,thewtex/cross-compilers,thewtex/cross-compilers,dockcross/dockcross,thewtex/cross-compilers,dockcross/dockcross