Can't find `gcompat` package

I i've followed glibc guide and i can't install gcompat package (testedx on x86_64 and aarch64 alpine linux installed from virt):

# apk add --no-cache gcompat
fetch http://mirror.reenigne.net/alpine/v3.14/main/x86_64/APKINDEX.tar.gz
ERROR: unable to select packages:
  gcompat (no such package):
    required by: world[gcompat]
asvm-x86-64:~/arduino_studio/bin#

alpine linux 3.14.1 and 3.14.2

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