June 2020 - Buildah - Podman List Archives

merge last x layers
by Hendrik Haddorp 17 Jun '20

17 Jun '20

Hi, is there any way to merge the last x layers of an image? Like if I have an image with five layers I would like to merge that down to say three or four layers. I know that I can remove all layers by squishing the image but I would like to keep some base layers. thanks, Hendrik

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modify layers
by Hendrik Haddorp 10 Jun '20

10 Jun '20

Hi, is there a way to modify the layers of an image? For example I would like to change some file attributes in an image without duplicating the data and not changing anything else in the structure of my image. I assume this can not be done with buildah but could it be done using some underlying libraries, like maybe https://github.com/containers/image ? thanks, Hendrik

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Debugging performance on WSL2
by Dominic 07 Jun '20

07 Jun '20

Hello, I've been using podman and buildah for a while on native Ubuntu and it's been great. With the release of WSL2 I'm trying to start building containers on Windows, but I'm running into some performance issues. Running something like: buildah copy $container . /srv in my project root takes maybe a second or two on native linux and minutes on my WSL2 system. Windows task manager doesn't show high resource utilization from any particular process during this time. Any ideas on how I can debug this? -- Thank you, Dominic

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Running buildah in OCP
by Dmitry Misharov 02 Jun '20

02 Jun '20

Hi, I was trying to build an image with the new registry.redhat.io/rhel8/buildah in OCP 4.3 and no luck. I read this article https://developers.redhat.com/blog/2019/08/14/best-practices-for-running-bu… but it seems it's not applicable for running buildah inside and OCP container. For example I cannot mount /dev/fuse or use overlay storage driver without mounting host directories. So is there a way to use buildah in OCP withoud cluster admin privileges? -- Dmitry Misharov Senior Quality Engineer, Red Hat Management QE Red Hat

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