cd ((outside src directory)
docker exec -it shopware bash -c 'sudo rm -rf /var/www/html/*'
docker cp ./src/. shopware:/var/www/html/
docker exec -it shopware bash -c 'sudo rm -rf composer.lock'
docker exec -it shopware bash -c 'sudo rm -rf /var/www/html/vendor'
docker exec -it shopware bash -c 'sudo chown www-data:www-data /var/www -R'
docker exec -it shopware bash -c './psh.phar install'