Commits on Oct 29, 2024

1. builder: introduce optimize subcommand for prefetch …

   We can statically analyze the image entrypoint dependency, or use runtime dynamic
   analysis technologies such as ebpf, fanotify, metric, etc. to obtain the container
   file access pattern, and then build this part of data into an independent image layer:
   
   * preferentially fetch blob during the image startup phase to reduce network and disk IO.
   * avoid frequent image builds, allows for better local cache utilization.
   
   Implement optimize subcommand to optimize image bootstrap
   from a prefetch file list, generate a new blob.
   
   ```
   nydus-image optimize --prefetch-files /path/to/prefetch-files.txt \
     --bootstrap /path/to/bootstrap \
     --blob-dir /path/to/blobs
   ```
   This will generate a new bootstrap and new blob in `blob-dir`.
   
   Signed-off-by: daiyongxuan <[email protected]>

   

   daiyongxuan committed Oct 29, 2024
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