Ubuntu Docker Compose Error

When you install docker with the default installer of Ubuntu (in our case. 20.04.3) you get following error by using „sudo docker-compose up“

ERROR: 
        Can't find a suitable configuration file in this directory or any
        parent. Are you in the right directory?

        Supported filenames: docker-compose.yml, docker-compose.yaml

It is quiet easy to be fixed. Just install/reinstall docker-compose with following command:

sudo apt-get install docker-compose

an then you can use:

sudo docker-compose up