Squashed commit of the following: (#2728) #5252

	name: ✔️ Verification of integration

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	workflow_dispatch:

	jobs:
	changes:
	runs-on: ubuntu-22.04
	timeout-minutes: 15
	outputs:
	any_modified: ${{ steps.filter.outputs.any_modified }}
	steps:
	- uses: actions/checkout@v3
	- uses: tj-actions/changed-files@v41
	id: filter
	with:
	files: \|
	.github/workflows/integration_tests_validation.yaml
	tests/contest/**
	files_ignore: \|
	**.md
	- name: List all changed files
	run: \|
	for file in ${{ steps.filter.outputs.all_modified_files }}; do
	echo "$file was changed"
	done
	validate:
	needs: [changes]
	if: needs.changes.outputs.any_modified == 'true'
	runs-on: ubuntu-20.04
	timeout-minutes: 30
	steps:
	- uses: actions/checkout@v3
	- name: Setup Rust toolchain and cache
	uses: actions-rust-lang/setup-rust-toolchain@v1.3.7
	- name: Install just
	uses: taiki-e/install-action@just
	- name: Install requirements
	run: sudo env PATH=$PATH just ci-prepare
	- name: Install runc 1.1.11
	run: \|
	wget -q https://github.com/opencontainers/runc/releases/download/v1.1.11/runc.amd64
	sudo mv runc.amd64 /usr/bin/runc
	sudo chmod 755 /usr/bin/runc
	- name: Build
	run: just runtimetest contest
	- name: Validate tests on runc
	run: just validate-contest-runc

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