moby--moby/hack/make/binary-daemon

#!/usr/bin/env bash
set -e

copy_binaries() {
	local dir="$1"
	local hash="$2"
	# Add nested executables to bundle dir so we have complete set of
	# them available, but only if the native OS/ARCH is the same as the
	# OS/ARCH of the build target
	if [ "$(go env GOOS)/$(go env GOARCH)" != "$(go env GOHOSTOS)/$(go env GOHOSTARCH)" ]; then
		return
	fi
	if [ ! -x /usr/local/bin/runc ]; then
		return
	fi
	echo "Copying nested executables into $dir"
	for file in containerd containerd-shim ctr runc docker-init docker-proxy rootlesskit rootlesskit-docker-proxy dockerd-rootless.sh; do
		cp -f "$(command -v "$file")" "$dir/"
		if [ "$hash" = "hash" ]; then
			hash_files "$dir/$file"
		fi
	done

	# vpnkit is amd64 only
	if command -v "vpnkit.$(uname -m)" 2>&1 >/dev/null; then
		cp -f "$(command -v "vpnkit.$(uname -m)")" "$dir/vpnkit"
		if [ "$hash" = "hash" ]; then
			hash_files "$dir/vpnkit"
		fi
	fi
}

[ -z "$KEEPDEST" ] && rm -rf "$DEST"
source "${MAKEDIR}/.binary"
copy_binaries "$DEST" 'hash'