clh: enable build using Podman

[ Port from packaging commit 4e1b5729f47d5f67902e1344521bc5b121673046 ]

Build clh with Podman, allow build the vmm in the Podman CI

Virtiofs qemu has to be build as this is requried by clh.

Fixes: #461

Signed-off-by: Jose Carlos Venegas Munoz <jose.carlos.venegas.munoz@intel.com>
Signed-off-by: Bo Chen <chen.bo@intel.com>

tools/packaging/static-build/cloud-hypervisor/docker-build/build.sh

@@ -11,7 +11,13 @@ set -o pipefail
 script_dir=$(dirname $(readlink -f "$0"))
 docker_image="cloud-hypervisor-builder"
 
-sudo docker build -t "${docker_image}" "${script_dir}"
+DOCKER_CLI="docker"
+
+if ! command -v docker && command -v podman; then
+	DOCKER_CLI="podman"
+fi
+
+sudo "${DOCKER_CLI}" build -t "${docker_image}" "${script_dir}"
 
 if test -t 1; then
 	USE_TTY="-ti"
@@ -20,7 +26,7 @@ else
 	echo "INFO: not tty build"
 fi
 
-sudo docker run \
+sudo "${DOCKER_CLI}" run \
 	--rm \
 	-v "$(pwd):/$(pwd)" \
 	-w "$(pwd)" \

tools/packaging/static-build/qemu-virtiofs/build-static-qemu-virtiofs.sh

@@ -13,6 +13,12 @@ script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 source "${script_dir}/../../scripts/lib.sh"
 source "${script_dir}/../qemu.blacklist"
 
+DOCKER_CLI="docker"
+
+if ! command -v docker &>/dev/null && command -v podman &>/dev/null; then
+	DOCKER_CLI="podman"
+fi
+
 kata_version="${kata_version:-}"
 packaging_dir="${script_dir}/../.."
 qemu_virtiofs_repo=$(get_from_kata_deps "assets.hypervisor.qemu-experimental.url" "${kata_version}")
@@ -27,7 +33,7 @@ http_proxy="${http_proxy:-}"
 https_proxy="${https_proxy:-}"
 prefix="${prefix:-"/opt/kata"}"
 
-sudo docker build \
+sudo "${DOCKER_CLI}" build \
 	--no-cache \
 	--build-arg http_proxy="${http_proxy}" \
 	--build-arg https_proxy="${https_proxy}" \
@@ -39,7 +45,7 @@ sudo docker build \
 	-f "${script_dir}/Dockerfile" \
 	-t qemu-virtiofs-static
 
-sudo docker run \
+sudo "${DOCKER_CLI}" run \
 	-i \
 	-v "${PWD}":/share qemu-virtiofs-static \
 	mv "/tmp/qemu-virtiofs-static/${qemu_virtiofs_tar}" /share/