Implement Podman Container Clone

podman container clone takes the id of an existing continer and creates a specgen from the given container's config
recreating all proper namespaces and overriding spec options like resource limits and the container name if given in the cli options

this command utilizes the common function DefineCreateFlags meaning that we can funnel as many create options as we want
into clone over time allowing the user to clone with as much or as little of the original config as they want.

container clone takes a second argument which is a new name and a third argument which is an image name to use instead of the original container's

the current supported flags are:

--destroy (remove the original container)
--name (new ctr name)
--cpus (sets cpu period and quota)
--cpuset-cpus
--cpu-period
--cpu-rt-period
--cpu-rt-runtime
--cpu-shares
--cpuset-mems
--memory
--run

resolves #10875

Signed-off-by: cdoern <cdoern@redhat.com>
Signed-off-by: cdoern <cbdoer23@g.holycross.edu>
Signed-off-by: cdoern <cdoern@redhat.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/pkg/specgen/generate/oci.go b/pkg/specgen/generate/oci.go
index 945c994ea..8b3550e36 100644
--- a/pkg/specgen/generate/oci.go
+++ b/pkg/specgen/generate/oci.go
@@ -301,7 +301,14 @@ func SpecGenToOCI(ctx context.Context, s *specgen.SpecGenerator, rt *libpod.Runt
 	}
 
 	if compatibleOptions.InfraResources == nil && s.ResourceLimits != nil {
-		g.Config.Linux.Resources = s.ResourceLimits
+		out, err := json.Marshal(s.ResourceLimits)
+		if err != nil {
+			return nil, err
+		}
+		err = json.Unmarshal(out, g.Config.Linux.Resources)
+		if err != nil {
+			return nil, err
+		}
 	} else if s.ResourceLimits != nil { // if we have predefined resource limits we need to make sure we keep the infra and container limits
 		originalResources, err := json.Marshal(s.ResourceLimits)
 		if err != nil {