Github container registary demo
docker build -t ghcr.io/bilalalpaslan/ghcrdemo .
docker run -it --rm --name ghcrdemo ghcr.io/bilalalpaslan/ghcrdemo
docker push ghcr.io/bilalalpaslan/ghcrdemo
echo $CR_PAT | docker login ghcr.io -u USERNAME --password-stdin
if this step be successfull, you can see the output like this: "Login Succeeded"
docker pull ghcr.io/bilalalpaslan/ghcrdemo
docker tag ghcrdemo ghcr.io/bilalalpaslan/ghcrdemo:1.0.0