Implemented test containers host override.

.gitea/workflows/ci.yml

@@ -14,6 +14,7 @@ jobs:
     env:
       TESTCONTAINERS_RYUK_DISABLED: 'true'
       TESTCONTAINERS_CHECKS_DISABLE: 'true'
+      TESTCONTAINERS_HOST_OVERRIDE: host.docker.internal
     steps:
       - uses: actions/checkout@v4  
       - uses: actions/setup-dotnet@v4

JSMR.Tests/Fixtures/MariaDbContainerFixture.cs

@@ -30,7 +30,12 @@ public sealed class MariaDbContainerFixture : IAsyncLifetime
 
         await _container.StartAsync();
 
-        RootConnectionString = _container.GetConnectionString();
+        var hostOverride = Environment.GetEnvironmentVariable("TESTCONTAINERS_HOST_OVERRIDE");
+        var host = string.IsNullOrWhiteSpace(hostOverride) ? "127.0.0.1" : hostOverride;
+
+        RootConnectionString = _container.GetConnectionString()
+            .Replace("127.0.0.1", host)      // normalize when running inside job container
+            .Replace("localhost", host);
 
         // Build the template ONCE with EF + your existing seed
         await MariaDbClone.CreateTemplateAsync(