How to build for alpine about udocker

[jorge-lip]

Having said you can try the following once inside the alpine container running in Docker.

apk update
apk add curl
curl https://raw.githubusercontent.com/indigo-dc/udocker/devel/udocker.py > udocker
chmod a+rx udocker

apk add python
apk add tar
apk add findutils
apk add file
./udocker --allow-root install

Now to run a centos6 container:

./udocker --allow-root pull ubuntu:16
./udocker --allow-root create --name=c6 centos:centos6
./udocker --allow-root setup --execmode=F1 c6
./udocker --allow-root run --nosysdirs c6

Notice that running an Alpine container inside udocker itself does not yet work in
the Fn execution modes which are the only ones that can work inside Docker.
The default Pn modes do support Alpine containers execution but unfortunately
these modes require PTRACE which does not work inside Docker. We are
working to support Alpine containers execution in the Fn modes.

[jorge-lip]

udocker is currently supported for CentOS, RH, Fedora, Ubuntu.
Execution of udocker inside Alpine is currently not supported, but feedback or contributions are welcome.

[frezbo]

Thanks @jorge-lip i will try this out and let you know, super happy for the fast response and how the maintainers are enthusiastic on maintaining the project