Process timeout when building new images

[rdarcy1]

Process has timeout of 60 seconds by default, which is exceeded when building docker images.

  The process "docker-compose -f /Users/robin/.porter/docker-compose.yaml -p porter up -d --remove-orphans php_fpm_7-1" exceeded the timeout of 60 seconds.  

Expect this can be solved by increasing the timeout passed to the Symfony process class in App\Support\Console\Cli