GHA: Use ubuntu-latest for all container jobs #98

	# Copyright 2019 - 2021 Alexander Grund
	# Distributed under the Boost Software License, Version 1.0.
	# https://www.boost.org/LICENSE_1_0.txt

	on:
	push:
	branches: [develop]

	name: Update standalone branch

	env:
	STANDALONE_BRANCH_NAME: standalone

	jobs:
	update:
	name: Update standalone branch
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Setup git
	run: \|
	git config --global user.email "[email protected]"
	git config --global user.name "$GITHUB_ACTOR"
	git fetch
	- name: Create standalone version
	id: standalone
	run: \|
	bash tools/create_standalone.sh /tmp/nowide_standalone
	git checkout "$STANDALONE_BRANCH_NAME" -- \|\| git checkout -b "$STANDALONE_BRANCH_NAME"
	rm -r *
	mv /tmp/nowide_standalone/* .
	# Check if anything changed to avoid later failure.
	# E.g. nothing changes if only CI files are modified which are removed by the above
	if git diff --exit-code; then
	echo "::set-output name=changed::false"
	else
	echo "::set-output name=changed::true"
	fi
	- name: Commit and push
	if: steps.standalone.outputs.changed == 'true'
	run: \|
	git add .
	git commit -m "Include '${{github.event.head_commit.message}}'"
	remote_repo="https://${GITHUB_ACTOR}:${{secrets.GITHUB_TOKEN}}@github.com/${GITHUB_REPOSITORY}.git"
	git push "$remote_repo" HEAD:$STANDALONE_BRANCH_NAME

Provide feedback