debian-buster64(robert)~$ docker run --rm -it mono:latest bash
root@35a955a211eb:/# apt update && apt upgrade
Get:1 https://download.mono-project.com/repo/debian stable-buster/snapshots/6.12.0.182 InRelease [5874 B]
Get:2 http://deb.debian.org/debian buster InRelease [122 kB]
Get:3 https://download.mono-project.com/repo/debian stable-buster/snapshots/6.12.0.182/main amd64 Packages [48.8 kB]
Get:4 http://deb.debian.org/debian-security buster/updates InRelease [65.4 kB]
Get:5 http://deb.debian.org/debian buster-updates InRelease [51.9 kB]
Get:6 http://deb.debian.org/debian buster/main amd64 Packages [7911 kB]
Get:7 http://deb.debian.org/debian-security buster/updates/main amd64 Packages [334 kB]
Get:8 http://deb.debian.org/debian buster-updates/main amd64 Packages [8788 B]
Fetched 8547 kB in 7s (1305 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
W: Conflicting distribution: https://download.mono-project.com/repo/debian stable-buster/snapshots/6.12.0.182 InRelease (expected stable-buster/snapshots/6.12.0.182 but got buster)
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@35a955a211eb:/# cd /tmp
root@35a955a211eb:/tmp# mono --version
Mono JIT compiler version 6.12.0.182 (tarball Tue Jun 14 22:43:31 UTC 2022)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
        TLS:           __thread
        SIGSEGV:       altstack
        Notifications: epoll
        Architecture:  amd64
        Disabled:      none
        Misc:          softdebug
        Interpreter:   yes
        LLVM:          yes(610)
        Suspend:       hybrid
        GC:            sgen (concurrent by default)
root@35a955a211eb:/tmp# cat > hello.cs
namespace HelloWorld
{
    class Hello {
        static void Main(string[] args)
        {
            System.Console.WriteLine("Hello World!");
        }
    }
}
root@35a955a211eb:/tmp# csc hello.cs
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc)
Copyright (C) Microsoft Corporation. All rights reserved.

root@35a955a211eb:/tmp# mono --aot=mcpu=generic --llvm -O=all,-shared hello.exe
llvm load failed: /usr/lib/libmono-llvm.so: undefined symbol: mono_codeman_enable_write

Mono Warning: llvm support could not be loaded.
Mono Ahead of Time compiler - compiling assembly /tmp/hello.exe
AOTID FFAA613A-8F1D-FEBA-AB5F-6C8DA4648F35
Compiled: 2/2
Executing the native assembler: "as" --64  -o /tmp/mono_aot_4xIgtd.o /tmp/mono_aot_4xIgtd
Executing the native linker: "ld" -shared -o /tmp/hello.exe.so.tmp  /tmp/mono_aot_4xIgtd.o
JIT time: 0 ms, Generation time: 0 ms, Assembly+Link time: 16 ms.
root@35a955a211eb:/tmp#

root@35a955a211eb:/tmp# mono --version
Mono JIT compiler version 6.12.0.182 (tarball Tue Jun 14 22:43:31 UTC 2022)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
        TLS:           __thread
        SIGSEGV:       altstack
        Notifications: epoll
        Architecture:  amd64
        Disabled:      none
        Misc:          softdebug
        Interpreter:   yes
        LLVM:          yes(610)
        Suspend:       hybrid
        GC:            sgen (concurrent by default)
root@35a955a211e