- What I did
The gzip compression used in the docker push has poor performance. I changed it to using pigz for compression.
I noticed that docker used pigz to decompress the pull image for better performance (#35697), so I think the performance of docker push can be improved in the same way.

- How I did it
Similar to #35697, this change switches to trying to use pigz for gzip compression. If it isn't available, it'll fall back to the default. This code path can also be disabled by environment variable.

- How to verify it
Performance improvement verification: after the manual push test of some images (from 19.2 MB to 28.2 GB) , the time consumed by pushing images is reduced by 47.9%~74.7%. In fact, I have noticed that some issues have discussed and verified the performance improvement brought by this.
Correctness verification: There are existing tests for this codepath to ensure correctness of this implementation.

- Description for the changelog

Push image faster by using pigz to compress