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failing to `tar -zxvf` on a tarball with a symlink, inside Docker on Mac (tar: Cannot utime: No such file or directory)

i am doing a build inside a docker container of Alpine Linux on Docker-On-Mac. inside the tarball there is a symlink to a local file (README -> README.md) that is failing the untaring:

tar: tarname.tar.gz/README: Cannot utime: No such file or directory

two interesting facts:

When running the same on Linux (Docker-on-Ubuntu running Alpine) it works flawlessly.
when running twice it succeeds, because README.md is already in the partially-created dir.

unfortunately on (2) above, it is untarring as park of a build program (Alpine's abuild) so i cannot just run the tar command twice.

any thoughts?

over 4 years ago · Santiago Trujillo

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Answer 1 · 2022-04-21T20:58:45.737Z

tar tries to get the 'file modified time', which fails for some files. As I don't know the contents of the archive, I cannot say why this happens.

But you can circumvent this problem by using the -m a.k.a. --touch flag, which let's tar ignore/not query the modification time:

tar -m -xzvf tarname.tar.gz

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failing to `tar -zxvf` on a tarball with a symlink, inside Docker on Mac (tar: Cannot utime: No such file or directory)

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Andres GPT