Add bincompat-go-http

[Criss-Ivana]

This PR ports the go-httpbin 2.13.4 from catalog into catalog-core.

[Criss-Ivana]

Commit history was squashed to a single commit. Earlier force-pushes were from amending locally and me constantly changing my mind on what the best commit message is. :)

[razvand]

Make the commit message wrap to 72 lines. Use "instructions" instead of "instructis" in the commit message.

If the application is httpbingo, name the directory accordingly: bincompat-go-httpbingo.

Use a proper name for authorship and for signed-off-by. Use Firstname Lastname <email>. Do not use Criss-Ivana.

Copy-pasting the commands doesn't work:

./setup.sh
make -C rootfs clean
make -C rootfs
./workdir/unikraft/support/scripts/mkcpio initrd.cpio ./rootfs/
make

sudo ip link set dev virbr0 down || true
sudo ip link del dev virbr0 || true
sudo ip link add dev virbr0 type bridge
sudo ip address add 172.44.0.1/24 dev virbr0
sudo ip link set dev virbr0 up

sudo qemu-system-x86_64 \
    -nographic \
    -enable-kvm \
    -m 256 \
    -cpu host \
    -netdev bridge,id=en0,br=virbr0 -device virtio-net-pci,netdev=en0 \
    -append "elfloader_qemu-x86_64 netdev.ip=172.44.0.2/24:172.44.0.1::: vfs.fstab=[ \"initrd0:/:extract::ramfs=1:\" ] -- /go-httpbin" \
    -kernel workdir/build/elfloader_qemu-x86_64 \
    -initrd ./initrd.cpio

Follow the instructions and example from the bincompat-c-hello/ directory. See the README, scripts and other files.

[Copilot]

Pull request overview

This PR adds a new bincompat-go-http example to catalog-core, intended to run a Linux ELF Go HTTP service (go-httpbin) on Unikraft via the ELF loader binary-compatibility layer.

Changes:

• Added a new bincompat-go-http/ app scaffold (Unikraft build Makefile, Kconfig fragment, setup helper).
• Added a rootfs build pipeline to produce a Linux ELF go-httpbin binary (Dockerfile + Makefile) and included Firecracker/QEMU run configs.
• Added end-to-end documentation for building the rootfs, building Unikraft, and running under QEMU/Firecracker.

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
bincompat-go-http/setup.sh	Creates workdir/ structure and symlinks required repos (unikraft, libs, elfloader).
bincompat-go-http/rootfs/Makefile	Builds/extracts a go-httpbin binary using Docker.
bincompat-go-http/rootfs/Dockerfile	Defines the containerized build of a static-PIE go-httpbin ELF.
bincompat-go-http/README.md	Documents setup, rootfs build, build/run steps for QEMU and Firecracker.
bincompat-go-http/Makefile.uk	Unikraft app metadata hook (empty, consistent with other templates).
bincompat-go-http/Makefile	Standard Unikraft wrapper makefile to build elfloader with required libs.
bincompat-go-http/fc.x86_64.json	Firecracker config for x86_64 booting elfloader + initrd and running /go-httpbin.
bincompat-go-http/fc.arm64.json	Firecracker config for arm64 booting elfloader + initrd and running /go-httpbin.
bincompat-go-http/Config.uk	Kconfig selections for elfloader + networking + Go runtime needs and larger default stack.
bincompat-go-http/.gitignore	Ignores workdir/ and the extracted rootfs binary.

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[Criss-Ivana]

@razvand Sorry I kept delaying this, I'll be able to have a look starting tomorrow.

Copy-pasting the commands doesn't work:

I'm finalizing stuff for GSoC and then I think I'll try to run it on a clean environment to see what the issue might be.

[razvand]

@razvand Sorry I kept delaying this, I'll be able to have a look starting tomorrow.

Copy-pasting the commands doesn't work:

I'm finalizing stuff for GSoC and then I think I'll try to run it on a clean environment to see what the issue might be.

Sure, no problem, @Criss-Ivana. We keep in touch here or on Discord.

If the PR is complete, from your point of view, make it a full PR (instead of just draft).