4.7. Obtener el código fuente de la imagen del contenedor UBI

Procedimiento

1. Utilice el comando skopeo copy para copiar la imagen del contenedor de origen en un directorio local:

   $ skopeo copy \
   docker://registry.access.redhat.com/ubi8:8.1-397-source \
   dir:$HOME/TEST
   ...
   Copying blob 477bc8106765 done
   Copying blob c438818481d3 done
   Copying blob 26fe858c966c done
   Copying blob ba4b5f020b99 done
   Copying blob f7d970ccd456 done
   Copying blob ade06f94b556 done
   Copying blob cc56c782b513 done
   Copying blob dcf9396fdada done
   Copying blob feb6d2ae2524 done
   Copying config dd4cd669a4 done
   Writing manifest to image destination
   Storing signatures

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2. Utilice el comando skopeo inspect para inspeccionar la imagen del contenedor de origen:

   $ skopeo inspect dir:$HOME/TEST
   {
       "Digest": "sha256:7ab721ef3305271bbb629a6db065c59bbeb87bc53e7cbf88e2953a1217ba7322",
       "RepoTags": [],
       "Created": "2020-02-11T12:14:18.612461174Z",
       "DockerVersion": "",
       "Labels": null,
       "Architecture": "amd64",
       "Os": "linux",
       "Layers": [
           "sha256:1ae73d938ab9f11718d0f6a4148eb07d38ac1c0a70b1d03e751de8bf3c2c87fa",
           "sha256:9fe966885cb8712c47efe5ecc2eaa0797a0d5ffb8b119c4bd4b400cc9e255421",
           "sha256:61b2527a4b836a4efbb82dfd449c0556c0f769570a6c02e112f88f8bbcd90166",
           ...
           "sha256:cc56c782b513e2bdd2cc2af77b69e13df4ab624ddb856c4d086206b46b9b9e5f",
           "sha256:dcf9396fdada4e6c1ce667b306b7f08a83c9e6b39d0955c481b8ea5b2a465b32",
           "sha256:feb6d2ae252402ea6a6fca8a158a7d32c7e4572db0e6e5a5eab15d4e0777951e"
       ],
       "Env": null
   }

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3. Para desencajar todo el contenido, escriba:

   $ cd $HOME/TEST
   $ for f in $(ls); do tar xvf $f; done

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4. Para comprobar los resultados, escriba:

   $ find blobs/ rpm_dir/
   blobs/
   blobs/sha256
   blobs/sha256/10914f1fff060ce31388f5ab963871870535aaaa551629f5ad182384d60fdf82
   rpm_dir/
   rpm_dir/gzip-1.9-4.el8.src.rpm

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5. Empezar a examinar y utilizar el contenido.