Docker and the OCI container ecosystem

Posted Jul 26, 2022 20:29 UTC (Tue) by amarao (guest, #87073)
Parent article: Docker and the OCI container ecosystem

Excellent overview of the ecosystem.

I found one small mistake. Files on overlayfs for container is not dropped when container stops, only if it's 'rebuilded', that, delete and recreated. Of you stop container and then star it again, all newly created files will be there.

Docker and the OCI container ecosystem

Posted Jul 26, 2022 20:39 UTC (Tue) by jordan (subscriber, #110573) [Link] (1 responses)

Hm, maybe s/stopped/destroyed/ would be slightly more accurate. The intention I'm trying to convey there is that the files don't stick around after you're done with the container.

Docker and the OCI container ecosystem

Posted Jul 26, 2022 21:29 UTC (Tue) by amarao (guest, #87073) [Link]

Yes. And the main reason people confuse that (assuming that 'stop' is a 'drop') is beause it's not possible to change container (without low-level hacks). If you want to update image or tweak manifest, you need to rebuild image, and new image means new container.