To create the certificate.pem file for upload, is this the correct order?

-----BEGIN CERTIFICATE-----

(Domain Certificate: github.company.com)

-----END CERTIFICATE-----

-----BEGIN CERTIFICATE-----

(Intermediate Certificate: GeoTrust)

-----END CERTIFICATE-----

-----BEGIN CERTIFICATE-----

(Root Certificate: DigiCert Global Root G2)

-----END CERTIFICATE-----

Should I ensure there are no blank lines or extra spaces between each certificate block in the file?