apt-get update: ¿por qué se retiene lxc-docker?

Question

¿Por qué se retiene lxc-docker? También noto que mi aplicación web, que se ejecuta en Docker, es bastante lenta. ¿Alguna sugerencia?

[lucas@production]/home/lucas$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following package was automatically installed and is no longer required:
  linux-image-3.16.0-28-generic
Use 'apt-get autoremove' to remove it.
The following packages have been kept back:
  lxc-docker
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
[lucas@production]/home/lucas$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following package was automatically installed and is no longer required:
  linux-image-3.16.0-28-generic
Use 'apt-get autoremove' to remove it.
The following packages have been kept back:
  lxc-docker
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.

Tenga en cuenta que ya ejecuté sudo apt-get dist-upgrade, lo que no resuelve este problema. Por lo tanto, no creo que mis preguntas sean un duplicado deestas preguntas

Answer 1

Puede actualizar lxc-dockerespecíficamente:

sudo apt-get install lxc-docker

Esto debería anular cualquier cosa que frene la actualización (excepto los paquetes retenidos manualmente, que excluimos en este caso).