This subreaper should always be turned on for containerd unless
explicitly needed for it to be off.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
To reduce the binary size of containerd, we no longer import the
`server` package for only a few defaults. This reduces the size of `ctr`
by 2MB. There are probably other gains elsewhere.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
This adds a config option to place the `containerd` daemon process into
a cgroup so that proper resource usage and accounting can be applied.
It defaults to not being place inside a cgroup and will create a new
cgroup if the `path` does not exist in the config or join an existing
`path` if it already exists.
```toml
[cgroup]
path = "/containerd"
```
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
