Freaks City

Understanding Docker Data Persistence When you create a container from an image, it starts with a fresh filesystem containing only the image layers. Any data written during the container's lifetime disappears when the container is removed, unless proper measures are taken. This presents a fundamental challenge: applications need persistent stor ...

Docker’s layered images are great for shipping applications, but by default every change a container makes disapears when the container is removed. To keep that data around we need to look at the three official persistence mechanisms—volumes, bind mounts, and tmpfs mounts—and understand why they exist in the first place. Why the Union File Syst ...