Problem Description
When using dockerfile to create a mirror, I encountered the error gpg: keyserver receive failed: Cannot assign requested address, causing the process to be interrupted.
Step 4/8 : RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 38DBBDC86092693E
---> Running in 857af6ee308a
gpg: directory '/root/.gnupg' created
gpg: keybox '/root/.gnupg/pubring.kbx' created
gpg: keyserver receive failed: Cannot assign requested address
Solution
RUN mkdir ~/.gnupg && echo "disable-ipv6" >> ~/.gnupg/dirmngr.conf