Revert "Rollback to alpine 1.12"
Revert "Rollback to alpine 1.12"

This reverts commit e1ddbb6eec85cde7a6efed13f66e887c56334a80.

kaiyou/freeposte.io,kaiyou/freeposte.io,kaiyou/freeposte.io,kaiyou/freeposte.io