diff --git a/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/Manifest b/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/Manifest
new file mode 100644
index 0000000000..334c449eec
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/Manifest
@@ -0,0 +1 @@
+DIST docbook-xsl-1.79.1.tar.bz2 21967928 SHA256 725f452e12b296956e8bfb876ccece71eeecdd14b94f667f3ed9091761a4a968 SHA512 83325cbaf1545da6b9b8b77f5f0e6fdece26e3c455164b300a1aa3d19e3bd29ae71fd563553a714a5394968d1a65684c6c7987c77524469358d18b8c227025c7 WHIRLPOOL 3bd03072aba15cda9e7a18cb6c1edfc91cdb706811fd07d5aa69df1ffd5a48394848079cf63c67360104f0c0ec89920268b49d358c62bf5f61d6030938be0a0f
diff --git a/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/docbook-xsl-stylesheets-1.79.1-r1.ebuild b/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/docbook-xsl-stylesheets-1.79.1-r1.ebuild
new file mode 100644
index 0000000000..f31e0f944d
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/docbook-xsl-stylesheets-1.79.1-r1.ebuild
@@ -0,0 +1,95 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=5
+
+USE_RUBY="ruby20 ruby21 ruby22 ruby23"
+
+inherit ruby-single
+
+DOCBOOKDIR="/usr/share/sgml/${PN/-//}"
+MY_PN="${PN%-stylesheets}"
+MY_P="${MY_PN}-${PV}"
+
+DESCRIPTION="XSL Stylesheets for Docbook"
+HOMEPAGE="http://wiki.docbook.org/DocBookXslStylesheets"
+SRC_URI="mirror://sourceforge/docbook/${MY_P}.tar.bz2"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="alpha amd64 arm arm64 hppa ia64 m68k ~mips ppc ppc64 s390 sh sparc x86 ~ppc-aix ~x64-cygwin ~amd64-fbsd ~sparc-fbsd ~x86-fbsd ~amd64-linux ~arm-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~m68k-mint ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE="ruby"
+
+RDEPEND=">=app-text/build-docbook-catalog-1.1
+	ruby? ( ${RUBY_DEPS} )"
+
+S="${WORKDIR}/${MY_P}"
+
+# Makefile is broken since 1.76.0
+RESTRICT=test
+
+src_prepare() {
+	# Delete the unnecessary Java-related stuff and other tools as they
+	# bloat the stage3 tarballs massively. See bug #575818.
+	rm -rv extensions/ tools/ || die
+	find \( -name build.xml -o -name build.properties \) \
+		 -printf "removed %p\n" -delete || die
+
+	if ! use ruby; then
+	   rm -rv epub/ || die
+	fi
+}
+
+# The makefile runs tests, not builds.
+src_compile() { :; }
+
+src_test() {
+	emake check
+}
+
+src_install() {
+	# The changelog is now zipped, and copied as the RELEASE-NOTES, so we
+	# don't need to install it
+	dodoc AUTHORS BUGS NEWS README RELEASE-NOTES.txt TODO
+
+	insinto ${DOCBOOKDIR}
+	doins VERSION VERSION.xsl
+
+	local i
+	for i in */; do
+		i=${i%/}
+
+		cd "${S}"/${i}
+		for doc in ChangeLog README; do
+			if [ -e "$doc" ]; then
+				mv ${doc} ${doc}.${i}
+				dodoc ${doc}.${i}
+				rm ${doc}.${i}
+			fi
+		done
+
+		doins -r "${S}"/${i}
+	done
+
+	if use ruby; then
+		local cmd="dbtoepub${MY_PN#docbook-xsl}"
+
+		# we can't use a symlink or it'll look for the library in the
+		# wrong path.
+		dodir /usr/bin
+		cat - > "${D}"/usr/bin/${cmd} <<EOF
+#!/usr/bin/env ruby
+
+load "${DOCBOOKDIR}/epub/bin/dbtoepub"
+EOF
+		fperms 0755 /usr/bin/${cmd}
+	fi
+}
+
+pkg_postinst() {
+	build-docbook-catalog
+}
+
+pkg_postrm() {
+	build-docbook-catalog
+}
diff --git a/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/docbook-xsl-stylesheets-1.79.1-r2.ebuild b/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/docbook-xsl-stylesheets-1.79.1-r2.ebuild
new file mode 100644
index 0000000000..77db5fdb1a
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/docbook-xsl-stylesheets-1.79.1-r2.ebuild
@@ -0,0 +1,101 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+USE_RUBY="ruby20 ruby21 ruby22 ruby23"
+
+inherit ruby-single
+
+DOCBOOKDIR="/usr/share/sgml/${PN/-//}"
+MY_PN="${PN%-stylesheets}"
+MY_P="${MY_PN}-${PV}"
+
+DESCRIPTION="XSL Stylesheets for Docbook"
+HOMEPAGE="http://wiki.docbook.org/DocBookXslStylesheets"
+SRC_URI="mirror://sourceforge/docbook/${MY_P}.tar.bz2"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~ppc-aix ~x64-cygwin ~amd64-fbsd ~sparc-fbsd ~x86-fbsd ~amd64-linux ~arm-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~m68k-mint ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE="ruby"
+
+RDEPEND=">=app-text/build-docbook-catalog-1.1
+	ruby? ( ${RUBY_DEPS} )"
+
+S="${WORKDIR}/${MY_P}"
+
+# Makefile is broken since 1.76.0
+RESTRICT=test
+
+PATCHES=(
+	"${FILESDIR}"/nonrecursive-string-subst.patch
+)
+
+src_prepare() {
+	default
+
+	# Delete the unnecessary Java-related stuff and other tools as they
+	# bloat the stage3 tarballs massively. See bug #575818.
+	rm -rv extensions/ tools/ || die
+	find \( -name build.xml -o -name build.properties \) \
+		 -printf "removed %p\n" -delete || die
+
+	if ! use ruby; then
+	   rm -rv epub/ || die
+	fi
+}
+
+# The makefile runs tests, not builds.
+src_compile() { :; }
+
+src_test() {
+	emake check
+}
+
+src_install() {
+	# The changelog is now zipped, and copied as the RELEASE-NOTES, so we
+	# don't need to install it
+	dodoc AUTHORS BUGS NEWS README RELEASE-NOTES.txt TODO
+
+	insinto ${DOCBOOKDIR}
+	doins VERSION VERSION.xsl
+
+	local i
+	for i in */; do
+		i=${i%/}
+
+		cd "${S}"/${i}
+		for doc in ChangeLog README; do
+			if [ -e "$doc" ]; then
+				mv ${doc} ${doc}.${i}
+				dodoc ${doc}.${i}
+				rm ${doc}.${i}
+			fi
+		done
+
+		doins -r "${S}"/${i}
+	done
+
+	if use ruby; then
+		local cmd="dbtoepub${MY_PN#docbook-xsl}"
+
+		# we can't use a symlink or it'll look for the library in the
+		# wrong path.
+		dodir /usr/bin
+		cat - > "${D}"/usr/bin/${cmd} <<EOF
+#!/usr/bin/env ruby
+
+load "${DOCBOOKDIR}/epub/bin/dbtoepub"
+EOF
+		fperms 0755 /usr/bin/${cmd}
+	fi
+}
+
+pkg_postinst() {
+	build-docbook-catalog
+}
+
+pkg_postrm() {
+	build-docbook-catalog
+}
diff --git a/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/files/nonrecursive-string-subst.patch b/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/files/nonrecursive-string-subst.patch
new file mode 100644
index 0000000000..99ce9960d9
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/files/nonrecursive-string-subst.patch
@@ -0,0 +1,30 @@
+Description: use EXSLT "replace" function when available
+ A recursive implementation  of string.subst is problematic,
+ long strings with many matches will cause stack overflows.
+Author: Peter De Wachter <pdewacht@gmail.com>
+Bug-Debian: https://bugs.debian.org/750593
+
+--- a/lib/lib.xsl
++++ b/lib/lib.xsl
+@@ -10,7 +10,10 @@
+      This module implements DTD-independent functions
+ 
+      ******************************************************************** -->
+-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
++<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
++                xmlns:str="http://exslt.org/strings"
++                exclude-result-prefixes="str"
++                version="1.0">
+ 
+ <xsl:template name="dot.count">
+   <!-- Returns the number of "." characters in a string -->
+@@ -56,6 +59,9 @@
+   <xsl:param name="replacement"/>
+ 
+   <xsl:choose>
++    <xsl:when test="function-available('str:replace')">
++      <xsl:value-of select="str:replace($string, string($target), string($replacement))"/>
++    </xsl:when>
+     <xsl:when test="contains($string, $target)">
+       <xsl:variable name="rest">
+         <xsl:call-template name="string.subst">
diff --git a/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/metadata.xml b/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/metadata.xml
new file mode 100644
index 0000000000..f99be59a68
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/app-text/docbook-xsl-stylesheets/metadata.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<!-- maintainer-needed -->
+	<use>
+		<flag name="ruby">
+      Install the Ruby-based dbtoepub script; requires an interpreter
+      compatible with <pkg>app-eselect/eselect-ruby</pkg>.
+    </flag>
+	</use>
+	<upstream>
+		<remote-id type="sourceforge">docbook</remote-id>
+	</upstream>
+</pkgmetadata>
diff --git a/sdk_container/src/third_party/portage-stable/metadata/md5-cache/app-text/docbook-xsl-stylesheets-1.79.1-r1 b/sdk_container/src/third_party/portage-stable/metadata/md5-cache/app-text/docbook-xsl-stylesheets-1.79.1-r1
new file mode 100644
index 0000000000..4842370ec2
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/metadata/md5-cache/app-text/docbook-xsl-stylesheets-1.79.1-r1
@@ -0,0 +1,13 @@
+DEFINED_PHASES=compile install postinst postrm prepare test
+DESCRIPTION=XSL Stylesheets for Docbook
+EAPI=5
+HOMEPAGE=http://wiki.docbook.org/DocBookXslStylesheets
+IUSE=ruby
+KEYWORDS=alpha amd64 arm arm64 hppa ia64 m68k ~mips ppc ppc64 s390 sh sparc x86 ~ppc-aix ~x64-cygwin ~amd64-fbsd ~sparc-fbsd ~x86-fbsd ~amd64-linux ~arm-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~m68k-mint ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris
+LICENSE=BSD
+RDEPEND=>=app-text/build-docbook-catalog-1.1 ruby? ( || ( dev-lang/ruby:2.2 dev-lang/ruby:2.1 dev-lang/ruby:2.3 ) virtual/rubygems )
+RESTRICT=test
+SLOT=0
+SRC_URI=mirror://sourceforge/docbook/docbook-xsl-1.79.1.tar.bz2
+_eclasses_=ruby-single	af6ea0a8fe4c4faf733f4dbafae9e233	ruby-utils	453e0fe0dd06baac93b584c91528cc62
+_md5_=8d41a94c1ac9dec1814564ee70dba3e6
diff --git a/sdk_container/src/third_party/portage-stable/metadata/md5-cache/app-text/docbook-xsl-stylesheets-1.79.1-r2 b/sdk_container/src/third_party/portage-stable/metadata/md5-cache/app-text/docbook-xsl-stylesheets-1.79.1-r2
new file mode 100644
index 0000000000..733980f855
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/metadata/md5-cache/app-text/docbook-xsl-stylesheets-1.79.1-r2
@@ -0,0 +1,13 @@
+DEFINED_PHASES=compile install postinst postrm prepare test
+DESCRIPTION=XSL Stylesheets for Docbook
+EAPI=6
+HOMEPAGE=http://wiki.docbook.org/DocBookXslStylesheets
+IUSE=ruby
+KEYWORDS=~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~ppc-aix ~x64-cygwin ~amd64-fbsd ~sparc-fbsd ~x86-fbsd ~amd64-linux ~arm-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~m68k-mint ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris
+LICENSE=BSD
+RDEPEND=>=app-text/build-docbook-catalog-1.1 ruby? ( || ( dev-lang/ruby:2.2 dev-lang/ruby:2.1 dev-lang/ruby:2.3 ) virtual/rubygems )
+RESTRICT=test
+SLOT=0
+SRC_URI=mirror://sourceforge/docbook/docbook-xsl-1.79.1.tar.bz2
+_eclasses_=ruby-single	af6ea0a8fe4c4faf733f4dbafae9e233	ruby-utils	453e0fe0dd06baac93b584c91528cc62
+_md5_=6c40eedb399b7270c0020c5e3d9310ff