правка

.gitea/workflows/test.yaml

@@ -14,6 +14,7 @@ jobs:
         image: postgres
         # Provide the password for postgres
         env:
+          POSTGRES_HOST: postgres
           POSTGRES_DB: persistence
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres

DD.Persistence.IntegrationTests/WebAppFactoryFixture.cs

@@ -25,7 +25,7 @@ public class WebAppFactoryFixture : WebApplicationFactory<Program>
 
             var dbConnection = config.Build().GetSection("DbConnection").Get<DbConnection>()!;
             //connectionString = dbConnection.GetConnectionString();
-            connectionString = "Host=127.0.0.1;Port=5442;Username=postgres;Password=postgres;Database=persistence";
+            connectionString = "Host=postgres;Port=5442;Username=postgres;Password=postgres;Database=persistence";
         });
 
         builder.ConfigureServices(services =>