I have some vm image versions in a vm image definition in a compute gallery. Azure cli’s image commands will only work on the entire Azure marketplace (https://learn.microsoft.com/en-us/cli/azure/vm/image?view=azure-cli-latest#az-vm-image-show) and acr purge only works on Container Registries and won’t accept the compute gallery name.

PURGE_CMD="acr purge 
>   --filter 'mydefinition:.*' 
>   --ago 7d --dry-run"

az acr run   --cmd "$PURGE_CMD"   --registry mycomputegallery  /dev/null

The resource with name ‘mycomputegallery’ and type ‘Microsoft.ContainerRegistry/registries’ could not be found