Could not verify GitHub OAuth credentials

Description:

When using the GITHUB_TRIGGER_CONFIG for an OnPremise GitHub Enterprise instance, Quay no longer launches because the config tool stops with the error "Could not verify GitHub OAuth credentials".

Steps:

1. Create an OAuth application within GitHub ES
2. Enable GitHub Trigger Feature end define the GITHUB_TRIGGER_CONFIG (custom URI)
3. Restart Quay

Expected Results:

Quay should verify the OAuth connection to the GitHub ES.

Actual Results:

Config-Tool stops with Error "Could not verify GitHub OAuth credentials". Config tool ignores the GITHUB_ENDPOINT parameter (https://api.github.com/ hardcoded)

Sources:

Check: config-tool/githubbuildtrigger_validator.go at master · quay/config-tool

Bug: config-tool/validators.go at master · quay/config-tool (github.com)

Workaround:

Starting Quay with the IGNORE_VALIDATION=true environment variable.