diff --git a/sdk_container/src/third_party/portage-stable/app-alternatives/cpio/cpio-0.ebuild b/sdk_container/src/third_party/portage-stable/app-alternatives/cpio/cpio-0.ebuild
new file mode 100644
index 0000000000..a7b0273d1d
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/app-alternatives/cpio/cpio-0.ebuild
@@ -0,0 +1,35 @@
+# Copyright 2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+ALTERNATIVES=(
+	"gnu:>=app-arch/cpio-2.13-r4"
+	libarchive:app-arch/libarchive
+)
+
+inherit app-alternatives
+
+DESCRIPTION="CPIO symlink"
+KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE="split-usr"
+
+RDEPEND="
+	!<app-arch/cpio-2.13-r4
+"
+
+src_install() {
+	local usr_prefix=
+	use split-usr && usr_prefix=../usr/bin/
+
+	case $(get_alternative) in
+		gnu)
+			dosym gcpio /bin/cpio
+			newman - cpio.1 <<<".so gcpio.1"
+			;;
+		libarchive)
+			dosym "${usr_prefix}bsdcpio" /bin/cpio
+			newman - cpio.1 <<<".so bsdcpio.1"
+			;;
+	esac
+}
diff --git a/sdk_container/src/third_party/portage-stable/app-alternatives/cpio/metadata.xml b/sdk_container/src/third_party/portage-stable/app-alternatives/cpio/metadata.xml
new file mode 100644
index 0000000000..77435f8882
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/app-alternatives/cpio/metadata.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>base-system@gentoo.org</email>
+		<name>Gentoo Base System</name>
+	</maintainer>
+	<maintainer type="person">
+		<email>mgorny@gentoo.org</email>
+		<name>Michał Górny</name>
+	</maintainer>
+	<use>
+		<flag name="gnu">
+			Symlink to GNU cpio (<pkg>app-arch/cpio</pkg>)
+		</flag>
+		<flag name="libarchive">
+			Symlink to bsdcpio from <pkg>app-arch/libarchive</pkg>
+		</flag>
+	</use>
+</pkgmetadata>