Update blank.yml

.github/workflows/blank.yml

@@ -39,6 +39,7 @@ jobs:
         run: |
           sudo apt update
           sudo apt install qemu-user-static binfmt-support debootstrap wget unzip qemu-utils -y
+          sudo mkdir -p work
           sudo debootstrap --foreign --no-check-gpg --variant=minbase --arch=arm64 testing work/rootfs
           sudo cp $(which qemu-aarch64-static) work/rootfs/usr/bin/qemu-aarch64-static
           which service && sudo service binfmt-support start