ci-automation: Give the sbsign_image container a name

Otherwise it uses the default name, which can clash with other
concurrent jobs, especially jobs for the other arches.

Signed-off-by: James Le Cuirot <[email protected]>

Author: chewi

ci-automation/sbsign_image.sh

@@ -82,7 +82,9 @@ function _sbsign_image_impl() {
     local sdk_image="$(docker_image_fullname "${sdk_name}" "${docker_sdk_vernum}")"
     echo "docker image rm -f '${sdk_image}'" >> ./ci-cleanup.sh
 
-    ./run_sdk_container -x ./ci-cleanup.sh -v "${FLATCAR_VERSION}" -U -C "${sdk_image}" \
+    local docker_vernum="$(vernum_to_docker_image_version "${FLATCAR_VERSION}")"
+    local sbsign_container="flatcar-sbsign-image-${arch}-${docker_vernum}"
+    ./run_sdk_container -x ./ci-cleanup.sh -n "${sbsign_container}" -v "${FLATCAR_VERSION}" -U -C "${sdk_image}" \
         ./sbsign_image --board="${arch}-usr" \
                        --group="${channel}" --version="${FLATCAR_VERSION}" \
                        --output_root="${CONTAINER_IMAGE_ROOT}" \