Comment 9 for bug 1857036

[Test Case]
$ lxc launch ubuntu:20.04/amd64 sudo-sru-lp1857036-test
$ lxc shell sudo-sru-lp1857036-test

Reproduce the problem

root@sudo-sru-lp1857036-test:~# sudo true
sudo: setrlimit(RLIMIT_CORE): Operation not permitted

Enable -proposed and update

root@sudo-sru-lp1857036-test:~# apt install -V sudo
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
   sudo (1.8.31-1ubuntu1 => 1.8.31-1ubuntu1.1)
1 upgraded, 0 newly installed, 0 to remove and 17 not upgraded.
Need to get 513 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu focal-proposed/main amd64 sudo amd64 1.8.31-1ubuntu1.1 [513 kB]
Fetched 513 kB in 1s (576 kB/s)
(Reading database ... 14621 files and directories currently installed.)
Preparing to unpack .../sudo_1.8.31-1ubuntu1.1_amd64.deb ...
Unpacking sudo (1.8.31-1ubuntu1.1) over (1.8.31-1ubuntu1) ...
Setting up sudo (1.8.31-1ubuntu1.1) ...

Check if the fix works

root@sudo-sru-lp1857036-test:~# sudo true
root@sudo-sru-lp1857036-test:~#