[RFC] runC support

[glestaris]

Many container engines are today built on runC. A few notable examples:

• Docker
• Cloud Foundry Garden
• Kubernetes CRI-O

Wonder if we could make ctop work with runC? It would have to be on the host that's running runC containers but that's probably not too much to ask.

WDYT?

[glestaris]

@williammartin

[bcicen]

runC support is certainly possible, as libcontainer does export the Stats() method (for Linux containers only)

[bcicen]

An initial runc connector implementation is available on the runc branch.

Running via docker:

docker run --rm -ti --name ctop \
  -v /run/runc:/run/runc \
  -v /sys:/sys \
  --pid=host \
  quay.io/vektorlab/ctop:runc --connector runc

Containers created via docker will be missing names and some other metadata; however stat collection and all other functionality is available.

[bcicen]

merged in latest release