The option --target-arch allows to set the architecture
used to build the image. By default this is the host
architecture. Please note, if the specified architecture
name does not match the host architecture and is therefore
requesting a cross architecture image build, it's important
to understand that for this process to work a preparatory
step to support the image architecture and binary format
on the building host is required and is not considered a
responsibility of kiwi. There will be a followup effort
on providing a plugin for kiwi which should be used to
manage the needed binfmt settings for cross arch image
builds
ce9b1ccc08