diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 45701df1429..6f5c6db1ca1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -346,15 +346,14 @@ jobs:
       matrix:
         provider: ["Consul"]
         framework: [net8.0]
-    services:
-      consul:
-        image: hashicorp/consul
-        ports:
-          - 8500:8500
-          - 8600:8600/tcp
-          - 8600:8600/udp
     steps:
     - uses: actions/checkout@v4
+    - name: Start Consul
+      run: |
+        docker run -d --name consul -p 8500:8500 -p 8600:8600/tcp -p 8600:8600/udp \
+          hashicorp/consul:1.19 agent -dev -client=0.0.0.0
+    - name: Wait for Consul
+      run: sleep 5
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
@@ -372,6 +371,9 @@ jobs:
 # [SuppressMessage("Microsoft.Security", "CSCAN0090:ConfigFile", Justification="Not a secret")]
 # [SuppressMessage("Microsoft.Security", "CSCAN0220:DefaultPasswordContexts", Justification="Not a secret")]
         ORLEANSCONSULCONNECTIONSTRING: "http://localhost:8500"
+    - name: Clean up Consul container
+      if: always()
+      run: docker rm -f consul
     - name: Archive Test Results
       if: always()
       uses: actions/upload-artifact@v4
diff --git a/src/Orleans.TestingHost/TestClusterBuilder.cs b/src/Orleans.TestingHost/TestClusterBuilder.cs
index 439eafcd63f..206222f1944 100644
--- a/src/Orleans.TestingHost/TestClusterBuilder.cs
+++ b/src/Orleans.TestingHost/TestClusterBuilder.cs
@@ -179,7 +179,7 @@ public static string CreateClusterId()
             string prefix = "testcluster-";
             int randomSuffix = Random.Shared.Next(1000);
             DateTime now = DateTime.UtcNow;
-            string DateTimeFormat = @"yyyy-MM-dd\tHH-mm-ss";
+            string DateTimeFormat = @"yyyy-MM-dd-HH-mm-ss";
             return $"{prefix}{now.ToString(DateTimeFormat, CultureInfo.InvariantCulture)}-{randomSuffix}";
         }