ci: remove dependency on run-on-arch-action

run-on-arch-action is simply a wrapper around docker. There is no
value in using it in libbpf, as it is not complicated to run
non-native arch docker images directly on github-hosted runners.

Docker relies on qemu-user-static installed on the system to emulate
different architectures.

Recently there were various reports about multi-arch docker builds
failing with seemingly random issues, and it appears to boil down to
qemu [1]. I stumbled on this problem while updating s390x runners [2]
for BPF CI, and setting up more recent version of qemu helped.

This change addresses recent build failures on s390x and ppc64le.

[1] https://github.com/docker/setup-qemu-action/issues/188
[2] https://github.com/kernel-patches/runner/pull/69
[3] https://docs.docker.com/build/buildkit/#getting-started

Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>

ci/build-in-docker.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -euo pipefail
+
+export DEBIAN_FRONTEND=noninteractive
+export TZ="America/Los_Angeles"
+
+apt-get update -y
+apt-get install -y tzdata build-essential sudo
+source ${GITHUB_WORKSPACE}/ci_setup
+
+$CI_ROOT/managers/ubuntu.sh
+
+exit 0