Add qemu and DIB flag to enable ARM64 docker platform

Author: MaxBed4d

.github/workflows/overcloud-host-image-build.yml

@@ -212,7 +212,7 @@ jobs:
           source venvs/kayobe/bin/activate &&
           source src/kayobe-config/kayobe-env --environment ci-builder &&
           kayobe seed host command run \
-          --command "sudo apt update && sudo apt -y install gcc git libffi-dev python3-dev python-is-python3 python3-venv" --show-output
+          --command "sudo apt update && sudo apt -y install gcc git libffi-dev python3-dev python-is-python3 python3-venv qemu-user-static" --show-output
         env:
           KAYOBE_VAULT_PASSWORD: ${{ secrets.KAYOBE_VAULT_PASSWORD }}
 

etc/kayobe/stackhpc-overcloud-dib.yml

@@ -58,6 +58,7 @@ stackhpc_overcloud_dib_env_vars:
   YUM: dnf
   # Workaround for stack user home ownership bug
   DIB_IMAGE_CACHE: "/tmp/yum"
+  DIB_CONTAINERFILE_BUILDOPTS: "--platform linux/{{ overcloud_dib_architecture }}"
 
 # StackHPC overcloud DIB image packages.
 stackhpc_overcloud_dib_packages: