`ch-image push`: spurious layer hash changes with older pigz
pigz versions older than 2.4 store timestamp metadata in the gzip header when using --no-name. This causes ch-image to produce different layer hashes for the same image in storage.
notes:
- if both
pigzandgzipare on the system,ch-imagewill usepigz. - the pigz version available on centos 7 is
2.3.4