When trying to configure an access token for composer, this fails with:
Head to https://github.com/settings/tokens/new?scopes=repo&description=xxxxx
to retrieve a token. It will be stored in "/composer/auth.json" for future use by Composer.
Token (hidden):
[ErrorException]
file_put_contents(/composer/auth.json): failed to open stream: Permission denied
When trying to configure an access token for composer, this fails with: