Wikimedia Release Engineering Team/SSD Sync Up/2019-01-22


 * We take notes now!


 * Please reply to AllHands thread if you have thoughts


 * Antoine:
 * apt security release yesterday
 * How do we trigger updates
 * Tyler to create tasks for discussing how to upgrade pipeline images and the general problem
 * TASK: Rebuild all pipeline images for security rebuilds in the pipeline
 * TASK: Upgrading lower layers in a docker image without invalidating subsequent layers -- docker rebase