diff --git a/CODEOWNERS b/CODEOWNERS
index 7ed278348..2be4e4c6f 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -23,7 +23,6 @@ src/azurelinux/**/opt/ @dotnet/runtime-infrastructure @dotnet/dotnet-docker-revi
 src/cbl-mariner/**/android/ @dotnet/runtime-infrastructure @dotnet/dotnet-docker-reviewers
 src/cbl-mariner/**/fpm/ @dotnet/runtime-infrastructure @dotnet/dotnet-docker-reviewers
 src/cbl-mariner/**/opt/ @dotnet/runtime-infrastructure @dotnet/dotnet-docker-reviewers
-src/cbl-mariner/**/docker-testrunner/ @dotnet/dotnet-docker-reviewers
 src/cbl-mariner/2.0/amd64/ @dotnet/runtime-infrastructure @dotnet/dotnet-docker-reviewers
 
 # centos
diff --git a/src/cbl-mariner/2.0/docker-testrunner/Dockerfile b/src/cbl-mariner/2.0/docker-testrunner/Dockerfile
deleted file mode 100644
index 17bd331bf..000000000
--- a/src/cbl-mariner/2.0/docker-testrunner/Dockerfile
+++ /dev/null
@@ -1,16 +0,0 @@
-# Dockerfile used to create a testrunner image that can perform Docker operations.
-# Usage:  docker run --rm -v /var/run/docker.sock:/var/run/docker.sock testrunner pwsh -File xyz.ps1
-
-FROM mcr.microsoft.com/cbl-mariner/base/core:2.0
-
-RUN tdnf install -y \
-        ca-certificates \
-        # Install Docker
-        moby-engine \
-        moby-buildx \
-        moby-cli \
-        # Test dependencies
-        azure-cli \
-        git \
-        powershell \
-    && tdnf clean all
diff --git a/src/cbl-mariner/manifest.json b/src/cbl-mariner/manifest.json
index 734a9f667..e6f49a10b 100644
--- a/src/cbl-mariner/manifest.json
+++ b/src/cbl-mariner/manifest.json
@@ -3,31 +3,6 @@
     {
       "name": "dotnet-buildtools/prereqs",
       "images": [
-        {
-          "sharedTags": {
-            "cbl-mariner2.0-docker-testrunner": {}
-          },
-          "platforms": [
-            {
-              "dockerfile": "src/cbl-mariner/2.0/docker-testrunner",
-              "os": "linux",
-              "osVersion": "cbl-mariner2.0",
-              "tags": {
-                "cbl-mariner2.0-docker-testrunner-amd64": {}
-              }
-            },
-            {
-              "architecture": "arm64",
-              "dockerfile": "src/cbl-mariner/2.0/docker-testrunner",
-              "os": "linux",
-              "osVersion": "cbl-mariner2.0",
-              "tags": {
-                "cbl-mariner2.0-docker-testrunner-arm64v8": {}
-              },
-              "variant": "v8"
-            }
-          ]
-        },
         {
           "platforms": [
             {