ci: cache: Install ORAS in the kata-deploy binaries builder container

ORAS is the tool which will help us to deal with our artefacts being
pushed to and pulled from a container registry.

As both the push to and the pull from will be done inside the
kata-deploy binaries builder container, we need it installed there.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

tools/packaging/kata-deploy/local-build/dockerbuild/Dockerfile

@@ -7,10 +7,11 @@ ENV DEBIAN_FRONTEND=noninteractive
 ENV INSTALL_IN_GOPATH=false
 
 COPY install_yq.sh /usr/bin/install_yq.sh
+COPY install_oras.sh /usr/bin/install_oras.sh
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
-# Install yq and docker
+# Install yq, oras, and docker
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
         ca-certificates \
@@ -18,6 +19,7 @@ RUN apt-get update && \
         sudo && \
     apt-get clean && rm -rf /var/lib/apt/lists/ && \
     install_yq.sh && \
+    install_oras.sh && \
     curl -fsSL https://get.docker.com -o get-docker.sh && \
     if uname -m | grep -Eq 's390x|ppc64le'; then export VERSION="v20.10" && \
     sed -i 's/\<docker-compose-plugin\>//g' get-docker.sh; fi && \

tools/packaging/kata-deploy/local-build/dockerbuild/install_oras.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+#
+# Copyright (c) 2023 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+install_dest="/usr/local/bin"
+
+function get_installed_oras_version() {
+	oras version | grep Version | sed -e s/Version:// | tr -d [:blank:]
+}
+
+oras_required_version="v1.1.0"
+if command -v oras; then
+	if [[ "${oras_required_version}" == "v$(get_installed_oras_version)" ]]; then
+		echo "ORAS is already installed in the system"
+		exit 0
+	fi
+
+	echo "Proceeding to cleanup the previous installed version of ORAS, and install the version specified in the versions.yaml file"
+	oras_system_path=$(which oras)
+	sudo rm -f ${oras_system_path}
+fi
+
+arch=$(uname -m)
+if [ "${arch}" = "ppc64le" ]; then
+	echo "An ORAS release for ppc64le is not available yet."
+	exit 0
+fi
+if [ "${arch}" = "x86_64" ]; then
+	arch="amd64"
+fi
+if [ "${arch}" = "aarch64" ]; then
+	arch="arm64"
+fi
+oras_tarball="oras_${oras_required_version#v}_linux_${arch}.tar.gz"
+
+echo "Downloading ORAS ${oras_required_version}"
+sudo curl -OL https://github.com/oras-project/oras/releases/download/${oras_required_version}/${oras_tarball}
+
+echo "Installing ORAS to ${install_dest}"
+sudo mkdir -p "${install_dest}"
+sudo tar -C "${install_dest}" -xzf "${oras_tarball}"
+sudo rm -f "${oras_tarball}"