jf scan failed to index tar file as container image

Describe the bug

source: https://github.com/jfrog/jfrog-cli-security/issues/334

$ jf -v
jf version 2.63.2

Current behavior

$ jf s ./artifacts/images/registry_2.8.1.tar
18:09:33 [Info] JFrog Xray version is: 3.95.7
18:09:33 [Info] [Thread 2] Indexing file: ./artifacts/images/registry_2.8.1.tar
18:09:40 [Info] 2024/08/16 18:09:33 maxprocs: Leaving GOMAXPROCS=8: CPU quota undefined
2024-08-16T18:09:37.334Z [jfxia] [WARN ] [] [docker_tar:74 ] [UnnamedContext ] Failed to index tar file as container image, continue to generic tar indexer. Error: failed to analyze docker tar archive
--- at /go/src/jfrog.com/xray/xray/backend/backend/indexer/indexer_core/docker_tar.go:134 (DockerTarOpener.analyzeTarAsContainer) ---
Caused by: failed to read manifest.json found in tar
--- at /go/src/jfrog.com/xray/xray/backend/backend/indexer/indexer_core/docker_tar.go:192 (DockerTarOpener.handleDockerManifestFile) ---
Caused by: manifest has no repo tags
--- at /go/src/jfrog.com/xray/xray/backend/backend/indexer/indexer_core/docker_tar.go:218 (prepareDockerManifestOnDemandData) ---
2024-08-16T18:09:37.354Z [jfxia] [INFO ] [] [extractor:185 ] [UnnamedContext ] Encountered release info file 'etc/alpine-release'
2024-08-16T18:09:37.355Z [jfxia] [INFO ] [] [extractor:185 ] [UnnamedContext ] Encountered release info file 'etc/os-release'
2024-08-16T18:09:40.177Z [jfxia] [INFO ] [] [archive_helper:61 ] [BackgroundContext ] SPDX license IDs from licenses.json and exceptions.json were loaded successfully
2024-08-16T18:09:40.445Z [jfxia] [INFO ] [] [golang:113 ] [UnnamedContext ] Couldn't get Go module component info: couldn't get go module name
18:09:40 [Info] Waiting for scan to complete on JFrog Xray...

Reproduction steps

$ skopeo copy --format v2s2 docker://registry:2.8.2 docker-archive:registry_2.8.1.tar
$ jf s registry_2.8.1.tar 

Expected behavior

No response

JFrog CLI-Security version

2.63.2

JFrog CLI version (if applicable)

2.63.2

Operating system type and version

ubuntu 24.04

JFrog Xray version

3.95.7

Reproduce the issue with the skopeo archive command and jf s registry_2.8.1.tar, then trace the CLI security scan entry point for Docker archive handling. Compare the output with the logged manifest.json and repo-tags failure; done means the tar archive is indexed as a container image without falling back to generic tar indexing.