first docker set-up

[E2design]

Started up my first servd. project using the servd/demo repo I ran into this error during docker compose

Composer (version 2.0.8) successfully installed to: /usr/local/bin/composer
Use it: php /usr/local/bin/composer

Removing intermediate container b529d21a70b6
 ---> 3e65faa145b8
Step 4/7 : RUN composer global require hirak/prestissimo
 ---> Running in e7adc5540e6e
Changed current directory to /root/.composer

                                                                                                    
[RuntimeException]                                                                                    
No composer.json present in the current directory, this may be the cause of the following exception.  
                                                                                                    

                                                                                                                       
[InvalidArgumentException]                                                                                               
Package hirak/prestissimo has a PHP requirement incompatible with your PHP version, PHP extensions and Composer version  
                                                                                                                       

require [--dev] [--dry-run] [--prefer-source] [--prefer-dist] [--fixed] [--no-suggest] [--no-progress] [--no-update] [--no-install] [--no-scripts] [--update-no-dev] [-w|--update-with-dependencies] [-W|--update-with-all-dependencies] [--with-dependencies] [--with-all-dependencies] [--ignore-platform-req IGNORE-PLATFORM-REQ] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [--sort-packages] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--apcu-autoloader-prefix APCU-AUTOLOADER-PREFIX] [--] [<packages>]...

ERROR: Service 'php' failed to build : The command '/bin/sh -c composer global require hirak/prestissimo' returned a non-zero code: 1