When using Ubuntu:impish pulseaudio does not seem to compile

[maxheadroom1351]

Is your feature request related to a problem? Please describe.
The problem is if I wish to use impish rather than 20.04 the pulseaudio segment of the build fails.

Describe the solution you'd like
I would like instructions on how to fix that.

Describe alternatives you've considered
none

Additional context
Errors encountered:
W: Download is performed unsandboxed as root as file 'pulseaudio_15.0+dfsg1-1ubuntu2.2.dsc' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)
Removing intermediate container 7843783bd2d6
---> 757028cb365c
Step 4/13 : RUN cd /pulseaudio-$(pulseaudio --version | awk '{print $2}') && ./configure
---> Running in 3ddac9643d42
/bin/sh: 1: cd: can't cd to /pulseaudio-15.0

[maxheadroom1351]

It seems to not like version 15 of pulse.

[laiqinghua]

它似乎不喜欢第 15 版的脉冲。

I also encountered this problem. Have you solved it