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'make kata-tarball' sometimes fails early with: cp: cannot create regular file '[...]/tools/packaging/kata-deploy/local-build/dockerbuild/install_yq.sh': File exists This happens because all assets are built in parallel using the same `kata-deploy-binaries-in-docker.sh` script, and thus all try to copy the `install_yq.sh` script to the same location with the `cp` command. This is a well known race condition that cannot be avoided without serialization of `cp` invocations. Move the copying of `install_yq.sh` to a separate script and ensure it is called *before* parallel builds. Make the presence of the copy a prerequisite for each sub-build so that they still can be triggered individually. Update the GH release workflow to also call this script before calling `kata-deploy-binaries-in-docker.sh`. Fixes #3756 Signed-off-by: Greg Kurz <groug@kaod.org>