vendor: update buildkit to 0.19.0

[crazy-max]

needs or closes #220

[crazy-max]

A bunch of platforms are missing in "supported": https://github.com/tonistiigi/binfmt/actions/runs/12974720699/job/36184946891#step:5:260

++ docker run --rm --privileged tonistiigi/binfmt:test --install all
installing: arm OK
installing: ppc64le OK
installing: mips64 OK
installing: s390x OK
installing: riscv64 OK
installing: mips64le OK
installing: loong64 OK
installing: arm64 OK
+ status='{
  "supported": [
    "linux/amd64",
    "linux/amd64/v2",
    "linux/amd64/v3",
    "linux/386"
  ],
  "emulators": [
    "llvm-16-runtime.binfmt",
    "llvm-17-runtime.binfmt",
    "llvm-18-runtime.binfmt",
    "python3.12",
    "qemu-aarch64",
    "qemu-arm",
    "qemu-loongarch64",
    "qemu-mips64",
    "qemu-mips64el",
    "qemu-ppc64le",
    "qemu-riscv64",
    "qemu-s390x"
  ]
}'
+ echo '{' '"supported":' '[' '"linux/amd64",' '"linux/amd64/v2",' '"linux/amd64/v3",' '"linux/386"' '],' '"emulators":' '[' '"llvm-16-runtime.binfmt",' '"llvm-17-runtime.binfmt",' '"llvm-18-runtime.binfmt",' '"python3.12",' '"qemu-aarch64",' '"qemu-arm",' '"qemu-loongarch64",' '"qemu-mips64",' '"qemu-mips64el",' '"qemu-ppc64le",' '"qemu-riscv64",' '"qemu-s390x"' ']' '}'
+ jq .supported
+ grep linux/arm64

Might relate to latest containerd/platforms or archutil changes.

[crazy-max]

Seems running a second time to show status again works:

docker run --privileged --rm tonistiigi/binfmt:test --install all
installing: arm OK
installing: s390x OK
installing: ppc64le OK
installing: mips64le OK
installing: mips64 OK
installing: loong64 OK
installing: riscv64 OK
installing: arm64 OK
{
  "supported": [
    "linux/amd64",
    "linux/amd64/v2",
    "linux/amd64/v3",
    "linux/386"
  ],
  "emulators": [
    "qemu-aarch64",
    "qemu-arm",
    "qemu-loongarch64",
    "qemu-mips64",
    "qemu-mips64el",
    "qemu-ppc64le",
    "qemu-riscv64",
    "qemu-s390x"
  ]
}

docker run --privileged --rm tonistiigi/binfmt:test
{
  "supported": [
    "linux/amd64",
    "linux/amd64/v2",
    "linux/amd64/v3",
    "linux/arm64",
    "linux/riscv64",
    "linux/ppc64le",
    "linux/s390x",
    "linux/386",
    "linux/loong64",
    "linux/arm/v7",
    "linux/arm/v6"
  ],
  "emulators": [
    "qemu-aarch64",
    "qemu-arm",
    "qemu-loongarch64",
    "qemu-mips64",
    "qemu-mips64el",
    "qemu-ppc64le",
    "qemu-riscv64",
    "qemu-s390x"
  ]
}

This might be a sync issue when mounting binfmt_misc:

binfmt/cmd/binfmt/main.go

Lines 198 to 203 in 85908cc

	if _, err := os.Stat(filepath.Join(mount, "status")); err != nil {
	if err := syscall.Mount("binfmt_misc", mount, "binfmt_misc", 0, ""); err != nil {
	return errors.Wrapf(err, "cannot mount binfmt_misc filesystem at %s", mount)
	}
	defer syscall.Unmount(mount, 0)
	}

[crazy-max]

Seems to be a cache issue with archutil.SupportedPlatforms