varlink build

Add the endpoint and methods for build so users can build an image
with varlink.  build can also use the more method for streaming
output back more regularily; however, it looks like a bug in buildah
does not output all build output to the writer provided.

Tidy up some create fixes and add endpoint for GetImage requested by
jhonce.

Signed-off-by: baude <bbaude@redhat.com>

pkg/varlinkapi/containers.go

@@ -182,6 +182,9 @@ func (i *LibpodAPI) GetContainerLogs(call ioprojectatomicpodman.VarlinkCall, nam
 			logs = append(logs, line)
 		}
 	}
+
+	call.Continues = false
+
 	return call.ReplyGetContainerLogs(logs)
 }