diff --git a/.github/actions/assign-triage-role/assign_triage_role/constants.py b/.github/actions/assign-triage-role/assign_triage_role/constants.py
index 238237dfe9..fc22683c96 100644
--- a/.github/actions/assign-triage-role/assign_triage_role/constants.py
+++ b/.github/actions/assign-triage-role/assign_triage_role/constants.py
@@ -14,11 +14,12 @@
 # limitations under the License.
 #
 import os
-from typing import Final, Optional
+from typing import Final
 
 ENV_GIT_AUTHOR_NAME: Final[str] = "GIT_AUTHOR_NAME"
 ENV_GITHUB_REPOSITORY: Final[str] = "GITHUB_REPOSITORY"
 ENV_GITHUB_REPOSITORY_OWNER: Final[str] = "GITHUB_REPOSITORY_OWNER"
+ENV_GITHUB_SERVER_URL: Final[str] = "GITHUB_SERVER_URL"
 ENV_GITHUB_TOKEN: Final[str] = "GITHUB_TOKEN"
 ENV_PR_GITHUB_TOKEN: Final[str] = "PR_GITHUB_TOKEN"
 ENV_GITHUB_REF_NAME: Final[str] = "GITHUB_REF_NAME"
@@ -42,7 +43,7 @@ def getenv(env_name: str) -> str:
 	"""
 	Gets environment variable :param env_name:
 	"""
-	env_var: Optional[str, None] = os.environ.get(env_name)
+	env_var = os.environ.get(env_name)
 	if env_var is None:
 		raise NameError(f"Environment variable {env_name} is not defined")
 	return env_var
@@ -51,6 +52,7 @@ def getenv(env_name: str) -> str:
 GIT_AUTHOR_NAME: Final[str] = getenv(ENV_GIT_AUTHOR_NAME)
 GITHUB_REPOSITORY: Final[str] = getenv(ENV_GITHUB_REPOSITORY)
 GITHUB_REPOSITORY_OWNER: Final[str] = getenv(ENV_GITHUB_REPOSITORY_OWNER)
+GITHUB_SERVER_URL: Final[str] = getenv(ENV_GITHUB_SERVER_URL)
 GITHUB_TOKEN: Final[str] = getenv(ENV_GITHUB_TOKEN)
 PR_GITHUB_TOKEN: Final[str] = getenv(ENV_PR_GITHUB_TOKEN)
 GITHUB_REF_NAME: Final[str] = getenv(ENV_GITHUB_REF_NAME)
diff --git a/.github/actions/assign-triage-role/assign_triage_role/templates/apache_license.yml b/.github/actions/assign-triage-role/assign_triage_role/templates/apache_license.yml
index 113599659c..d4a9f4f68d 100644
--- a/.github/actions/assign-triage-role/assign_triage_role/templates/apache_license.yml
+++ b/.github/actions/assign-triage-role/assign_triage_role/templates/apache_license.yml
@@ -18,8 +18,8 @@
 # {DESCRIPTION}
 # Collaborators are contributors, other than committers, who have had {ISSUE_THRESHOLD} or more Issue-closing Pull Requests merged
 # in the past {SINCE_DAYS_AGO} days. If you want to be an Apache Traffic Control collaborator:
-# 1. Read our contribution guidelines at https://github.com/apache/trafficcontrol/blob/master/CONTRIBUTING.md
-# 2. Find an Issue to work on: https://github.com/apache/trafficcontrol/issues?q=is:issue+is:open+label:"good+first+issue"+no:assignee
+# 1. Read our contribution guidelines at {REPO_URL}/blob/master/CONTRIBUTING.md
+# 2. Find an Issue to work on: {REPO_URL}/issues?q=is:issue+is:open+label:"good+first+issue"+no:assignee
 # 3. Get coding! For questions on how to contribute, you can reach the ATC community on
 #   - The #traffic-control channel of the ASF Slack (invite link: https://s.apache.org/tc-slack-request)
 #   - The ATC Development mailing list: https://trafficcontrol.apache.org/mailing_lists
diff --git a/.github/actions/assign-triage-role/assign_triage_role/templates/pr_template.md b/.github/actions/assign-triage-role/assign_triage_role/templates/pr_template.md
index d53378b773..c4974f0f1e 100644
--- a/.github/actions/assign-triage-role/assign_triage_role/templates/pr_template.md
+++ b/.github/actions/assign-triage-role/assign_triage_role/templates/pr_template.md
@@ -10,18 +10,18 @@ This PR uses [`.asf.yaml`](https://s.apache.org/asfyamltriage) to assign the Git
 <hr/>
 {EXPIRE} If you want to be an Apache Traffic Control collaborator next month:
 
-1. Read our [contribution guidelines](https://github.com/apache/trafficcontrol/blob/master/CONTRIBUTING.md)
-2. Find an Issue to work on (recommended issues have the [good first issue](https://github.com/apache/trafficcontrol/issues?q=is:issue+is:open+label:"good+first+issue"+no:assignee) label) and ask to be assigned
+1. Read our [contribution guidelines]({REPO_URL}/blob/master/CONTRIBUTING.md)
+2. Find an Issue to work on (recommended issues have the [good first issue]({REPO_URL}/issues?q=is:issue+is:open+label:"good+first+issue"+no:assignee) label) and ask to be assigned
 3. Get coding! For questions on how to contribute, you can reach the ATC community on
     - The `#traffic-control` channel of the ASF Slack ([invite link](https://s.apache.org/tc-slack-request))
     - The ATC Dev [mailing list](https://trafficcontrol.apache.org/mailing_lists) ([archives](https://lists.apache.org/list?dev@trafficcontrol.apache.org:lte=5y:))
 <hr/>
 
 ## Which Traffic Control components are affected by this PR?
-- Other: [`.asf.yaml`](https://github.com/apache/trafficcontrol/blob/master/.asf.yaml)
+- Other: [`.asf.yaml`]({REPO_URL}/blob/master/.asf.yaml)
 
 ## What is the best way to verify this PR?
-Verify that the fixed Issues listed above are linked to [PRs from the past {SINCE_DAYS_AGO} days](https://github.com/apache/trafficcontrol/pulls?q=is:pr+linked:issue+merged:{SINCE_DAY}..{TODAY})
+Verify that the fixed Issues listed above are linked to [PRs from the past {SINCE_DAYS_AGO} days]({REPO_URL}/pulls?q=is:pr+linked:issue+merged:{SINCE_DAY}..{TODAY})
 
 ## PR submission checklist
 - [ ] This PR has tests
diff --git a/.github/actions/assign-triage-role/assign_triage_role/triage_role_assigner.py b/.github/actions/assign-triage-role/assign_triage_role/triage_role_assigner.py
index 4a5dbac241..0254aa33d0 100644
--- a/.github/actions/assign-triage-role/assign_triage_role/triage_role_assigner.py
+++ b/.github/actions/assign-triage-role/assign_triage_role/triage_role_assigner.py
@@ -18,13 +18,12 @@
 import sys
 from datetime import date, timedelta
 from http.client import NOT_FOUND
-from typing import Optional, Final
+from typing import Any, Hashable, NotRequired, Optional, Final, TypedDict
 from xml.dom import minidom
-from xml.dom.minidom import Node, Element
-
+from xml.dom.minidom import Node
 import yaml
+
 from github.Commit import Commit
-from github.ContentFile import ContentFile
 from github.GithubException import GithubException, UnknownObjectException
 from github.InputGitAuthor import InputGitAuthor
 from github.Issue import Issue
@@ -32,11 +31,37 @@
 from github.NamedUser import NamedUser
 from github.Repository import Repository
 
-from assign_triage_role.constants import (GH_TIMELINE_EVENT_TYPE_CROSS_REFERENCE, ASF_YAML_FILE,
-	APACHE_LICENSE_YAML, GIT_AUTHOR_EMAIL_TEMPLATE, SINGLE_PR_TEMPLATE_FILE,
-	SINGLE_CONTRIBUTOR_TEMPLATE_FILE, PR_TEMPLATE_FILE, EMPTY_CONTRIB_LIST_LIST,
-	EMPTY_LIST_OF_CONTRIBUTORS, CONGRATS, EXPIRE, GITHUB_REPOSITORY, GIT_AUTHOR_NAME,
-	GITHUB_REPOSITORY_OWNER, MINIMUM_COMMITS, SINCE_DAYS_AGO, GITHUB_REF_NAME, PR_GITHUB_TOKEN)
+from assign_triage_role.constants import (
+	GH_TIMELINE_EVENT_TYPE_CROSS_REFERENCE,
+	ASF_YAML_FILE,
+	APACHE_LICENSE_YAML,
+	GIT_AUTHOR_EMAIL_TEMPLATE,
+	GITHUB_SERVER_URL,
+	SINGLE_PR_TEMPLATE_FILE,
+	SINGLE_CONTRIBUTOR_TEMPLATE_FILE,
+	PR_TEMPLATE_FILE,
+	EMPTY_CONTRIB_LIST_LIST,
+	EMPTY_LIST_OF_CONTRIBUTORS,
+	CONGRATS,
+	EXPIRE,
+	GITHUB_REPOSITORY,
+	GIT_AUTHOR_NAME,
+	GITHUB_REPOSITORY_OWNER,
+	MINIMUM_COMMITS,
+	SINCE_DAYS_AGO,
+	GITHUB_REF_NAME,
+	PR_GITHUB_TOKEN
+)
+
+class UpdateFileArgs(TypedDict):
+	path: str
+	message: str
+	content: str
+	sha: str
+	branch: str
+
+	author: NotRequired[InputGitAuthor]
+	committer: NotRequired[InputGitAuthor]
 
 
 class TriageRoleAssigner(Github):
@@ -50,7 +75,7 @@ class TriageRoleAssigner(Github):
 	target_branch_name: str
 	owner: str
 
-	def __init__(self, *args, **kwargs) -> None:
+	def __init__( self, *args: Any, **kwargs: Any) -> None:
 		super().__init__(*args, **kwargs)
 		repo_name = GITHUB_REPOSITORY
 		self.repo = self.get_repo(repo_name)
@@ -74,8 +99,7 @@ def get_committers(self) -> set[str]:
 		"""
 		return {user.login for user in self.repo.get_collaborators() if user.permissions.push}
 
-	def prs_by_contributor(self, committers: set[str]) -> dict[
-		NamedUser, list[(Issue, Issue)]]:
+	def prs_by_contributor(self, committers: set[str]) -> dict[NamedUser, list[tuple[Issue, Issue]]]:
 		"""
 		Returns a dict of Pull Requests, associated by committer, within the last
 		:var self.since_day: days of :var self.today:.
@@ -86,7 +110,7 @@ def prs_by_contributor(self, committers: set[str]) -> dict[
 		query = (f"repo:{repo_name} is:issue linked:pr is:closed closed:"
 		         f"{self.since_day()}..{self.today}")
 		linked_issues = self.search_issues(query=query)
-		prs_by_contributor: dict[NamedUser, list[(Issue, Issue)]] = {}
+		prs_by_contributor: dict[NamedUser, list[tuple[Issue, Issue]]] = {}
 		for linked_issue in linked_issues:
 			timeline = linked_issue.get_timeline()
 			pull_request: Optional[Issue] = None
@@ -95,14 +119,14 @@ def prs_by_contributor(self, committers: set[str]) -> dict[
 					continue
 				if event.event != GH_TIMELINE_EVENT_TYPE_CROSS_REFERENCE:
 					continue
-				pr_text: dict[str] = event.raw_data["source"]["issue"]
+				pr_text: dict[str, Any] = event.raw_data["source"]["issue"]
 				if "pull_request" not in pr_text:
 					continue
 				pull_request = Issue(self.repo.__getattribute__("_requester"), event.raw_headers,
 					pr_text, completed=True)
 			# Do not break, in case the Issue has ever been linked to more than 1 PR in the past
 			if pull_request is None:
-				raise Exception(
+				raise LookupError(
 					f"Unable to find a linked Pull Request for Issue {self.repo.full_name}#{linked_issue.number}")
 			# Skip unmerged PRs
 			if "merged_at" not in pull_request.pull_request.raw_data:
@@ -116,7 +140,7 @@ def prs_by_contributor(self, committers: set[str]) -> dict[
 		return prs_by_contributor
 
 	def ones_who_meet_threshold(self, prs_by_contributor: dict[NamedUser,
-	list[(Issue, Issue)]]) -> dict[str, list[(Issue, Issue)]]:
+	list[tuple[Issue, Issue]]]) -> dict[str, list[tuple[Issue, Issue]]]:
 		"""
 		Returns a dict of contributors who had at least self.minimum_commits Issue-closing Pull
 		Requests merged in the past self.since_days_ago days
@@ -135,8 +159,12 @@ def ones_who_meet_threshold(self, prs_by_contributor: dict[NamedUser,
 			if len(pull_requests) >= self.minimum_commits
 		}
 
-	def set_collaborators_in_asf_yaml(self, prs_by_contributor: dict[str, list[(Issue, Issue)]],
-			description: str) -> None:
+	def set_collaborators_in_asf_yaml(
+		self,
+		prs_by_contributor: dict[str, list[tuple[Issue, Issue]]],
+		description: str,
+		repo_url: str
+	) -> None:
 		"""
 		Writes the list of collaborators to .asf.yaml
 		"""
@@ -144,15 +172,24 @@ def set_collaborators_in_asf_yaml(self, prs_by_contributor: dict[str, list[(Issu
 		with open(ASF_YAML_FILE, encoding="utf-8") as stream:
 			github_key: Final[str] = "github"
 			collaborators_key: Final[str] = "collaborators"
-			asf_yaml: dict[str, dict] = yaml.safe_load(stream)
+			asf_yaml: dict[str, dict[Hashable, Any]] = yaml.safe_load(stream)
 		if github_key not in asf_yaml:
-			asf_yaml[github_key]: dict[str, dict]() = {}
+			asf_yaml[github_key] = {}
 		asf_yaml[github_key][collaborators_key] = collaborators
 
-		with open(os.path.join(os.path.dirname(__file__), APACHE_LICENSE_YAML),
-				encoding="utf-8") as stream:
-			apache_license = stream.read().format(DESCRIPTION=description,
-				ISSUE_THRESHOLD=self.minimum_commits, SINCE_DAYS_AGO=self.since_days_ago)
+		with open(
+			os.path.join(
+				os.path.dirname(__file__),
+				APACHE_LICENSE_YAML
+			),
+			encoding="utf-8"
+		) as stream:
+			apache_license = stream.read().format(
+				DESCRIPTION=description,
+				ISSUE_THRESHOLD=self.minimum_commits,
+				SINCE_DAYS_AGO=self.since_days_ago,
+				REPO_URL=repo_url
+			)
 
 		with open(ASF_YAML_FILE, "w", encoding="utf-8") as stream:
 			stream.write(apache_license)
@@ -171,8 +208,10 @@ def push_changes(self, source_branch_name: str, commit_message: str) -> Commit:
 		with open(ASF_YAML_FILE, encoding="utf-8") as stream:
 			asf_yaml = stream.read()
 
-		asf_yaml_contentfile: ContentFile = self.repo.get_contents(ASF_YAML_FILE, source_branch_ref)
-		kwargs = {"path": ASF_YAML_FILE,
+		asf_yaml_contentfile = self.repo.get_contents(ASF_YAML_FILE, source_branch_ref)
+		if isinstance(asf_yaml_contentfile, list):
+			asf_yaml_contentfile = asf_yaml_contentfile[0]
+		kwargs: UpdateFileArgs = {"path": ASF_YAML_FILE,
 			"message": commit_message,
 			"content": asf_yaml,
 			"sha": asf_yaml_contentfile.sha,
@@ -186,7 +225,9 @@ def push_changes(self, source_branch_name: str, commit_message: str) -> Commit:
 		except KeyError:
 			print("Committing using the default author")
 
-		commit: Commit = self.repo.update_file(**kwargs).get("commit")
+		commit = self.repo.update_file(**kwargs).get("commit")
+		if not isinstance(commit, Commit):
+			raise TypeError(f"expected a commit, but got: {type(commit)}")
 		print(f"Updated {ASF_YAML_FILE} on {self.repo.name} branch {source_branch_name}")
 		return commit
 
@@ -194,8 +235,10 @@ def get_repo_file_contents(self, branch: str) -> str:
 		"""
 		Uses the GitHub API to get the contents of .asf.yaml
 		"""
-		return self.repo.get_contents(ASF_YAML_FILE,
-			f"refs/heads/{branch}").decoded_content.rstrip().decode()
+		asf_file = self.repo.get_contents(ASF_YAML_FILE, f"refs/heads/{branch}")
+		if isinstance(asf_file, list):
+			asf_file = asf_file[0]
+		return asf_file.decoded_content.rstrip().decode()
 
 	def branch_exists(self, branch: str) -> bool:
 		"""
@@ -210,7 +253,7 @@ def branch_exists(self, branch: str) -> bool:
 		return False
 
 	@staticmethod
-	def list_of_contributors(prs_by_contributor: dict[str, list[(Issue, Issue)]],
+	def list_of_contributors(prs_by_contributor: dict[str, list[tuple[Issue, Issue]]],
 			today: date) -> tuple[str, str, str]:
 		"""
 		Returns a list of contributors in a tuple, along with :var congrats: and :var expire:,
@@ -237,11 +280,13 @@ def remove_comments(pr_body: str) -> str:
 		"""
 		Removes comments from the Pull Request body
 		"""
-		body: Element = minidom.parseString(f"<body>{pr_body}</body>").firstChild
+		body = minidom.parseString(f"<body>{pr_body}</body>").firstChild
+		if body is None:
+			raise ValueError("failed to parse PR body")
 		return "".join(node.toxml()
 			for node in body.childNodes if node.nodeType != Node.COMMENT_NODE)
 
-	def get_pr_body(self, prs_by_contributor: dict[str, list[(Issue, Issue)]]) -> str:
+	def get_pr_body(self, prs_by_contributor: dict[str, list[tuple[Issue, Issue]]]) -> str:
 		"""
 		Renders the Pull Request template
 		"""
@@ -255,7 +300,7 @@ def get_pr_body(self, prs_by_contributor: dict[str, list[(Issue, Issue)]]) -> st
 				encoding="utf-8") as stream:
 			pr_template = stream.read()
 
-		def contrib_list(contributor: str, pr_tuples: list[(Issue, Issue)]) -> str:
+		def contrib_list(contributor: str, pr_tuples: list[tuple[Issue, Issue]]) -> str:
 			pr_list = "\n".join(
 				pr_line_template.format(ISSUE_NUMBER=linked_issue.number, PR_NUMBER=pr.number
 				) for pr, linked_issue in pr_tuples)
@@ -270,11 +315,19 @@ def contrib_list(contributor: str, pr_tuples: list[(Issue, Issue)]) -> str:
 		list_of_contributors, congrats, expire = self.list_of_contributors(prs_by_contributor,
 			self.today)
 
-		pr_body = pr_template.format(CONTRIB_LIST_LIST=contrib_list_list,
-			MONTH=self.today.strftime("%B"), CONGRATS=congrats,
-			LIST_OF_CONTRIBUTORS=list_of_contributors, EXPIRE=expire,
-			ISSUE_THRESHOLD=self.minimum_commits, SINCE_DAYS_AGO=self.since_days_ago,
-			SINCE_DAY=self.since_day(), TODAY=self.today)
+		repo_url = "/".join((GITHUB_SERVER_URL, GITHUB_REPOSITORY))
+		pr_body = pr_template.format(
+			CONTRIB_LIST_LIST=contrib_list_list,
+			MONTH=self.today.strftime("%B"),
+			CONGRATS=congrats,
+			LIST_OF_CONTRIBUTORS=list_of_contributors,
+			EXPIRE=expire,
+			ISSUE_THRESHOLD=self.minimum_commits,
+			SINCE_DAYS_AGO=self.since_days_ago,
+			SINCE_DAY=self.since_day(),
+			TODAY=self.today,
+			REPO_URL=repo_url
+		)
 		# If on a fork, do not ping users or reference Issues or Pull Requests
 		if self.repo.parent is not None:
 			pr_body = re.sub(r"@(?!trafficcontrol)([A-Za-z0-9]+)", r"＠\1", pr_body)
@@ -283,7 +336,7 @@ def contrib_list(contributor: str, pr_tuples: list[(Issue, Issue)]) -> str:
 		print("Templated PR body")
 		return pr_body
 
-	def create_pr(self, prs_by_contributor: dict[str, list[(Issue, Issue)]], commit_message: str,
+	def create_pr(self, prs_by_contributor: dict[str, list[tuple[Issue, Issue]]], commit_message: str,
 			source_branch_name: str) -> None:
 		"""
 		Submits a Pull Request
@@ -321,7 +374,8 @@ def run(self) -> None:
 		committers = self.get_committers()
 		prs_by_contributor = self.ones_who_meet_threshold(self.prs_by_contributor(committers))
 		description = f"ATC Collaborators for {self.today.strftime('%B %Y')}"
-		self.set_collaborators_in_asf_yaml(prs_by_contributor, description)
+		repo_url = "/".join((GITHUB_SERVER_URL, GITHUB_REPOSITORY))
+		self.set_collaborators_in_asf_yaml(prs_by_contributor, description, repo_url)
 
 		source_branch_name: Final[str] = f"collaborators-{self.today.strftime('%Y-%m')}"
 		commit_message = description
diff --git a/.github/actions/assign-triage-role/setup.cfg b/.github/actions/assign-triage-role/setup.cfg
index 16ef60c00c..1766a66e60 100644
--- a/.github/actions/assign-triage-role/setup.cfg
+++ b/.github/actions/assign-triage-role/setup.cfg
@@ -21,7 +21,7 @@ author_email = dev@trafficcontrol.apache.org
 classifiers = OSI Approved :: Apache Software License
 
 [options]
-python_requires = >=3.10
+python_requires = >=3.11
 packages = assign_triage_role
 install_requires =
 	PyGithub
diff --git a/.github/containers/trafficserver-alpine/docker-compose.yml b/.github/containers/trafficserver-alpine/docker-compose.yml
index 68cd428377..df0ac1f441 100644
--- a/.github/containers/trafficserver-alpine/docker-compose.yml
+++ b/.github/containers/trafficserver-alpine/docker-compose.yml
@@ -42,4 +42,4 @@ services:
           - linux/amd64
           - linux/arm64
     # for example, ghcr.io/apache/trafficcontrol/ci/trafficserver-alpine:9.1.2
-    image: ${CONTAINER:-ghcr.io/apache/trafficcontrol/ci/trafficserver-alpine}:${ATS_VERSION}
+    image: ${CONTAINER:-ghcr.io/${GITHUB_REPOSITORY}/ci/trafficserver-alpine}:${ATS_VERSION}
diff --git a/.github/workflows/assign-triage-role.yml b/.github/workflows/assign-triage-role.yml
index 2842887078..2198b55cff 100644
--- a/.github/workflows/assign-triage-role.yml
+++ b/.github/workflows/assign-triage-role.yml
@@ -45,10 +45,10 @@ jobs:
         uses: actions/checkout@master
         if: ${{ (github.repository_owner == 'apache' && github.ref == 'refs/heads/master' ) || github.event_name != 'schedule' }}
         id: checkout
-      - name: Install Python 3.10
+      - name: Install Python 3.11
         uses: actions/setup-python@v2
         if: ${{ steps.checkout.outcome == 'success' }}
-        with: { python-version: '3.10' } # Must be quoted to include the trailing 0
+        with: { python-version: '3.11' } # Must be quoted to include the trailing 0s of versions that have them
       - name: Install assign_triage_role Python module and dependencies
         if: ${{ steps.checkout.outcome == 'success' }}
         run: pip install .github/actions/assign-triage-role
diff --git a/.github/workflows/container-trafficserver-alpine.yml b/.github/workflows/container-trafficserver-alpine.yml
index 7a1da09030..d59afc24d3 100644
--- a/.github/workflows/container-trafficserver-alpine.yml
+++ b/.github/workflows/container-trafficserver-alpine.yml
@@ -15,7 +15,7 @@
 # specific language governing permissions and limitations
 # under the License.
 
-name: Container ghcr.io/apache/trafficcontrol/ci/trafficserver-alpine
+name: Container ghcr.io/${{ github.repository }}/ci/trafficserver-alpine
 
 env:
   CONTAINER: ghcr.io/${{ github.repository }}/ci/trafficserver-alpine