github.com/sealerio/sealer@v0.11.1-0.20240507115618-f4f89c5853ae/docs/design/build_implementation.md (about)

     1  # implementation of sealer build
     2  
     3  ## Abstract
     4  
     5  Generally, the image generated from sealer build has no differences with container images. The image is compatible with OCI. Let's call it cluster image.
     6  Sealer has some special operations based on the usual build of container images. Like (1) Adding a layer for storing containers
     7  images automatically; (2) Saving cluster image information to the annotations from manifest of OCI v1 images. Sealer doesn't implement
     8  the concrete building procedure. Sealer implements build over mature tools (we choose `buildah` currently). We will have an introduction for how the
     9  sealer build implements next.
    10  
    11  ## Implement
    12  
    13  ### Engine
    14  
    15  ### Store Container Images