Yes but, now I’ve got to ask; why are you even downloading this to a TemplateVM?
The last time I installed anbox, I just followed this documentation:
A) Manually download (via browser/cli) from a (disposable?) internet connected guest qube
B) Verify file with signature
C) Copy to dom0
In dom0:
$ qvm-run --pass-io dispXXXX 'cat "/media/user/android_amd64.img"' > android_amd64.img
D) Create Standalone/HVM
In dom0:
$ qvm-create --property=virt_mode=hvm --property=memory=4096 --property=kernel='' --label red --standalone --root-move-from android_amd64.img anbox