Running yay as root is forbidden,
so this docker has a second user called builduser that can run yay,
and shadowed the actual yay command.
Namely, now, yay-pure is an actual call to yay,
while the command yay actually calls sudo -u builduser yay-pure.
Moreover, for those using this image as a base for other images,
I provide a builtin, Docker-friendly command yay-install,
which translates to sudo -u builduser yay-pure --noconfirm --needed -Syu "@",
and cleans packages once finished.
The idea here is to simplify extension;
in fact, a derived image may simply have a docker file such as:
RUN yay-install intellij-idea-community-editionAnd live happily.
For those who need yay as-is,
just prefix sudo -u builduser to any yay-pure invocation.
If the alias does not suit you, just
RUN mv /usr/bin/yay-pure /usr/bin/yay
RUN rm /usr/bin/yay-install