bin/quickstart.sh enhancements

Summary:

• The .env file is required for docker-compose (so create that first)
• Only build the containers we use
• Fixed check for chromium
• Ensure cgroupv2 is disabled on host (required for docker to work)
• Ignore import errors (in case the OX api key is not set for instance)
• Don't hardcode the composer binary path

Differential Revision: https://git.kolab.org/D3023