Aleksa,
On 2019-02-21 19:31, Aleksa Sarai wrote:
On 2019-02-21, Philip Rhoades <phil@xxxxxxxxxxxxx> wrote:
People,
I have exported an existing container with:
This isn't the right list for this -- I would suggest mailing
<dev@xxxxxxxxxxxxxxxxxx>.
Oh, I am on that list too but I thought from the name of this list, it
would be more appropriate . .
This is a kernel mailing list -- but I'll
answer your question anyway.
Thanks! OK, I will check all of the stuff below later today.
Regards,
Phil.
mkdir rootfs
docker export rails_dsf | tar -C rootfs -xvf -
runc spec
runc run rails_dsf
Check whether "readonly": true is in config.json, and set it to false
if
it is.
I would recommend using skopeo and umoci for generating an OCI runtime
bundle, since those are more modern. The equivalent to the above
command
would be:
$ # You need an image to operate on.
% id="$(docker commit rails_dsf rails_img)"
# Convert the Docker image to an OCI image.
% skopeo copy docker-daemon:rails_img:latest oci:rails_img:latest
# Unpack the image into an OCI runtime bundle.
% umoci unpack --image rails_img:latest bundle
# Run the bundle with runc.
% runc run -b bundle rails_dsf
(The nice thing is that you can then generate new layers if you want
using OCI -- as well as taking advantage of rootless containers if you
use the --rootless flag to umoci.)
--
Philip Rhoades
PO Box 896
Cowra NSW 2794
Australia
E-mail: phil@xxxxxxxxxxxxx
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