Prevent docker login failure #8

	name: Build Docker image

	on: [push, pull_request]

	jobs:
	main:
	name: Docker
	runs-on: ubuntu-latest
	timeout-minutes: 20
	strategy:
	matrix:
	tag: [latest, debug, lto]
	include:
	- tag: latest
	build-args: buildparams=CFLAGS=-O2 CXXFLAGS=-O2
	- tag: debug
	build-args: buildparams=DEBUG=y
	- tag: lto
	build-args: buildparams=LTO=y CFLAGS=-O2 CXXFLAGS=-O2
	steps:
	- name: Clone Tree
	uses: actions/checkout@v3
	with:
	submodules: recursive
	- name: Build Docker image
	run: \|
	docker build --build-arg buildparams="${{ matrix.build-args }}" -t ${{ matrix.tag }} . \
	--label "org.opencontainers.image.revision=${{ github.sha }}" \
	--label "org.opencontainers.image.created=$(date --rfc-3339=seconds --utc)"
	- name: Test Docker image
	run: \|
	cd samples
	for dir in */
	do
	cd "$dir"
	docker run --rm -v `pwd`:/usr/src/app -t ${{ matrix.tag }} make -j`nproc`
	cd ..
	done
	- name: Push container if on master branch
	if: ${{ github.ref == 'refs/heads/master' }}
	run: \|
	docker login -u "${{ github.actor }}" -p "${{ secrets.GITHUB_TOKEN }}"
	docker tag ${{ matrix.tag }} ghcr.io/${{ github.repository }}:${{ matrix.tag }}
	docker push ghcr.io/${{ github.repository }}:${{ matrix.tag }}

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