fix: disable GNUTYPE_SPARSE to fix docker build

[dongdigua]

moby/moby#4066

and

https://github.com/dongdigua/aosc-os-docker-files/actions/runs/15941041853/job/44969100053

[MingcongBai]

Strange that the issue you referenced was last updated in 2016, this might not be related (and would help to dig for the root cause, too).

[dongdigua]

I'm investigating good/bad tarballs locally, pls wait

There's another clue https://hub.docker.com/r/aosc/aosc-os-buildkit is last updated on 4.13, which indicates that it build failed for some reason (@liushuyu log?)

https://releases.aosc.io/os-amd64/buildkit/aosc-os_buildkit_20250606_amd64.tar.xz also failed at unhandled tar header type 83 on my CI

[dongdigua]

It proved that it's the sparse that caused a difference

I wrote this rust code:

for e in ar.entries().unwrap() {                                                                                                    
    let entry = e.unwrap();                                                                                                         
    if !entry.header().as_gnu().unwrap().sparse[0].is_empty() {                                                                     
        println!("{:?}", entry.path());                                                                                             
    }                                                                                                                               
} 

and got (arm64 can docker build, amd64, riscv64, loongarch64 can't)

[tar-inspector]──[?]─ cat ~/git/aosc-os-docker-files/aosc-os_buildkit_20250605_loongarch64.tar | cargo run
   Compiling tar-inspector v0.1.0 (/home/digua/tmp/tar-inspector)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
     Running `target/debug/tar-inspector`
Ok("var/log/journal/336bcde3559a456fbacfca08a9257698/system.journal")
[tar-inspector]──[?]─ cat ~/git/aosc-os-docker-files/aosc-os_buildkit_20250605_arm64.tar | cargo run      
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.01s
     Running `target/debug/tar-inspector`
[tar-inspector]──[?]─