I have created an initContainer

initContainers:
- name: migration
  image: registry.access.redhat.com/ubi8/ubi:latest
  securityContext:
    allowPrivilegeEscalation: false
    privileged: false
    readOnlyRootFilesystem: true
    runAsNonRoot: true
    
  command: ['sh', '-c', 'mkdir -p /tmp/import_export/ && cp /tmp/migration/* /tmp/import_export/ && rm -rf /tmp/migration/*']
  volumeMounts:
    - name: backup-config-volume
      mountPath: /tmp/migration/
    - name: dest
      mountPath: /cnom/var/import_export/

which has shared volume /tmp/migration , /tmp/import_export/ with main container
if i just copy files from /tmp/migration to /tmp/import_export/ it works if I try to remove files in source directory after copy

&& rm -rf /tmp/migration/*

it fails could you suggest any workaround so that I can remove files from source directory after copy completes ?

tried to remove files by issuing bash command in init container and it failed