public IEnumerable<IAppModule> GetAppModules()
    {
        yield return this;
        yield return new ModuleA();
        yield return new ModuleB();
       ...
    }

    public virtual void ConfigureDependencies(IServiceCollection services,IDependencyManager dependencyManager)
    {
AssemblyContainer.Current.AddAppAssemblies(typeof(SecurityAppModule).GetTypeInfo().Assembly);


AssemblyContainer.Current.AddAppAssemblies(typeof(OrganizationChartAppModule).GetTypeInfo().Assembly);
       ...
       }

dependencyManager.RegisterEfCoreDbContext<ModuleAContext, SqlServerDbContextObjectsProvider>();

dependencyManager.RegisterEfCoreDbContext<ModuleBContext, SqlServerDbContextObjectsProvider>();