Understanding Docker Images and Containers: A Visual Guide to the Union Filesystem

Image Definition An image is a collection of read-only layers stacked vertically, offering users a unified view of the filesystem. The following diagram illustrates this concept. From the left side, you can observe multiple read-only layers stacked on top of each other. Each layer (except the bottom one) contains a pointer to the layer beneath ...

Posted on Thu, 07 May 2026 02:50:21 +0000 by ArmanIc