Add GitHub authentication for PyGithub with env var GITHUB_TOKEN

Author: travisgosselin

container/libs/github.py

@@ -1,8 +1,14 @@
-from datetime import datetime, MINYEAR
+import os
+from datetime import datetime, MINYEAR
 from github import Github, GitRelease, Repository, GithubException
 
 def get_latest_github_repo_version(repo):
-    client = Github()
+    # check for a github token that may be used alongside the codeql cli to upload github results
+    # this will limit rate limting 403 errors on checking codeql versions, as the request will be authenticated if possible.
+    # by default codeql uses env var "GITHUB_TOKEN" to authenticate
+    # https://codeql.github.com/docs/codeql-cli/manual/github-upload-results/
+    access_token = os.getenv('GITHUB_TOKEN')
+    client = Github(access_token) if access_token != None else Github()
     repo = client.get_repo(repo)
     releases = repo.get_releases()
     latest_release = get_latest_github_release(releases)