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8 changes: 8 additions & 0 deletions ci-automation/ci_automation_common.sh
Original file line number Diff line number Diff line change
Expand Up @@ -158,6 +158,14 @@ function docker_image_to_buildcache() {
local id_file="$(basename "$image")-${version}.id"

$docker save "${image}":"${version}" | zstd -T0 -o "${tarball}"

# It is necessary to chmod from 0600 to 0644 to make it readable
# afterwards by rsync during the release process. Zstd sets the mode
# of the output file to 0600 in case of temporary files to avoid race
# condition. See also https://github.com/facebook/zstd/pull/1644,
# https://github.com/facebook/zstd/pull/3432.
chmod 0644 "${tarball}"

# Cut the "sha256:" prefix that is present in Docker but not in Podman
$docker image inspect "${image}":"${version}" | jq -r '.[].Id' | sed 's/^sha256://' > "${id_file}"
create_digests "${SIGNER:-}" "${tarball}" "${id_file}"
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