Shopware 5 Development Version using Docker

When I’m try to setup shopware 5 development version using Docker.

so I ran ./psh.phar docker:start which output this:

pcg@pcg-Latitude-E6410:/var/www/shopwareic.com/public_html$ ./psh.phar docker:start

###################
Starting Execution of 'docker:start' ('dev-ops/docker/actions/start.sh')


(1/6) Starting
> echo "COMPOSE_PROJECT_NAME: ${COMPOSE_PROJECT_NAME}"
	COMPOSE_PROJECT_NAME: 
	
(2/6) Starting
> dev-ops/docker/containers/scriptcreator.sh
	Created /var/www/shopwareic.com/public_html/dev-ops/docker/containers/php7/createuser.sh
	Created /var/www/shopwareic.com/public_html/dev-ops/docker/containers/mysql/createuser.sh
	
(3/6) Starting
> sudo docker-compose build && docker-compose up -d
	[sudo] password for pcg: 
Building app_mysql
	unable to prepare context: path "/var/www/shopwareic.com/public_html/dev-ops/docker/containers/mysql" not found
	Service 'app_mysql' failed to build
	
Execution aborted, a subcommand failed!

I’m not exactly sure how to fix this. I’m pretty new to docker. Anyone know why it is giving me a not found „Service ‚app_mysql‘ failed to build“

I’m using Ubuntu.

I’ve been following.(Installation Guide)