app-emulation/docker-cli: Import from Gentoo

Docker upstream split the cli component into a separate repo, so there is
a separate ebuild that builds the docker utility. This is a prerequisite
of the update of docker to 20.10.

This is an import from portage commit 69d01a4273a556b1205a7a575cb3811ab7e2443d.

Signed-off-by: Jeremi Piotrowski <jeremi.piotrowski@gmail.com>

sdk_container/src/third_party/coreos-overlay/app-emulation/docker-cli/Manifest

@@ -0,0 +1 @@
+DIST docker-cli-20.10.7.tar.gz 7523515 BLAKE2B 36ae46a28ca943e75419014b8b8453dbdd36bf240b9c36aed245447241dd07635da0319fd9b6ea409ecbe4c419eec8650d94d2a296e45a9c3b02a9a47a314888 SHA512 4523ae70cb27d848da119070171af2eb84e974ac39d70be4feee105e37c949487c7f72a9bc30c32ce71bffb0787e27b7b9194ce5a8aeae57bdfeb3f2d730010f

sdk_container/src/third_party/coreos-overlay/app-emulation/docker-cli/docker-cli-20.10.7.ebuild

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+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+GIT_COMMIT=f0df35096d
+EGO_PN="github.com/docker/cli"
+inherit bash-completion-r1  golang-vcs-snapshot
+
+DESCRIPTION="the command line binary for docker"
+HOMEPAGE="https://www.docker.com/"
+MY_PV=${PV/_/-}
+SRC_URI="https://github.com/docker/cli/archive/v${MY_PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="amd64 arm64"
+IUSE="hardened"
+
+RDEPEND="!<app-emulation/docker-20.10.1"
+
+RESTRICT="installsources strip"
+
+S="${WORKDIR}/${P}/src/${EGO_PN}"
+
+src_prepare() {
+	default
+	sed -i 's@dockerd\?\.exe@@g' contrib/completion/bash/docker || die
+}
+
+src_compile() {
+	export DISABLE_WARN_OUTSIDE_CONTAINER=1
+	export GOPATH="${WORKDIR}/${P}"
+	# setup CFLAGS and LDFLAGS for separate build target
+	# see https://github.com/tianon/docker-overlay/pull/10
+	export CGO_CFLAGS="-I${ROOT}/usr/include"
+	export CGO_LDFLAGS="-L${ROOT}/usr/$(get_libdir)"
+		emake \
+		LDFLAGS="$(usex hardened '-extldflags -fno-PIC' '')" \
+		VERSION="$(cat VERSION)" \
+		GITCOMMIT="${GIT_COMMIT}" \
+		dynbinary
+
+	# Flatcar: removed man page generation since they are not included in images
+}
+
+src_install() {
+	dobin build/docker
+	dobashcomp contrib/completion/bash/*
+	bashcomp_alias docker dockerd
+	insinto /usr/share/fish/vendor_completions.d/
+	doins contrib/completion/fish/docker.fish
+	insinto /usr/share/zsh/site-functions
+	doins contrib/completion/zsh/_*
+}

sdk_container/src/third_party/coreos-overlay/app-emulation/docker-cli/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>williamh@gentoo.org</email>
+		<name>William Hubbs</name>
+	</maintainer>
+</pkgmetadata>