ci: Change 32-bit Docker images to use EOL repos(backport <https://github.com/rust-lang/libc/pull/4120>)(cherry picked from commit 9830960c19c53b1527593413e0f55c8cfb067344)
Upgrade Docker images to Ubuntu 23.10
Update Docker image to Ubuntu 22.04Signed-off-by: Yuki Okushi <[email protected]>
add CI for armv7-unknown-linux-uclibceabihf
uclibc: fix O_TMPFILE value, un-pub some unused fields to fix libc-test
ci: add Dockerfiles for uclibc on armv7 and mipsel