How docker images are identified with sha?

Asked Jul 23 '23 at 21:06

Active Jul 23 '23 at 21:06

Viewed 26 times

There is an official busybox:1.36.1 docker image on Dockerhub (link).

It has 3 different sha:

when I pull it, I see Digest: sha256:2376a0c12759aa1214ba83e771ff252c7b1663216b192fbe5e0fb364e952f85c
when I docker images it, I see IMAGE ID 5242710cbd55
on dockerhub page I see Digest:sha256:67a8ef886e2ca4055f00e7cd13aedb9b24148c1451a6832d16fcc997a157eedc

$ docker pull busybox:1.36.1
1.36.1: Pulling from library/busybox
Digest: sha256:2376a0c12759aa1214ba83e771ff252c7b1663216b192fbe5e0fb364e952f85c
Status: Downloaded newer image for busybox:1.36.1
docker.io/library/busybox:1.36.1

$ docker images busybox
REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
busybox      1.36.1    5242710cbd55   2 weeks ago   4.26MB

Why are these 3 sha differ? Which one identifies docker image? Image ID is not image sha?

asked Jul 23 '23 at 21:06

AntonioK

https://stackoverflow.com/questions/39811230/why-doesnt-my-newly-created-docker-have-a-digest - https://stackoverflow.com/questions/56364643/whats-the-difference-between-a-docker-images-image-id-and-its-digest – MatsLindh Jul 23 '23 at 21:11
Also https://stackoverflow.com/questions/42879587/what-does-each-sha-mean-in-a-docker-image – Zac Anger Jul 23 '23 at 21:12
Image ID is not necessarily a hash, it could be a random identifier. – tadman Jul 23 '23 at 21:14
Are you on an arm platform? – Daniel A. White Jul 23 '23 at 21:19

How docker images are identified with sha?

0 Answers0