diff --git a/identify-process-cgroup-by-pid.md b/docs/background/identify-process-cgroup-by-pid.md similarity index 100% rename from identify-process-cgroup-by-pid.md rename to docs/background/identify-process-cgroup-by-pid.md diff --git a/proc-stat-in-containers.md b/docs/background/proc-stat-in-containers.md similarity index 100% rename from proc-stat-in-containers.md rename to docs/background/proc-stat-in-containers.md