Added configurable Startup Delay.

Author: Jaben

src/LettuceEncrypt/Internal/AcmeCertificateLoader.cs

@@ -26,14 +26,15 @@ internal class AcmeCertificateLoader(
 {
     private readonly ILogger _logger = logger;
 
-    public TimeSpan RunDelay = TimeSpan.FromSeconds(5);
+    public TimeSpan RunDelay => options.Value.StartupRunDelay;
 
     protected override async Task ExecuteAsync(CancellationToken stoppingToken)
     {
         await Task.Run(
             async () =>
             {
                 appLifetime.ApplicationStarted.WaitHandle.WaitOne();
+
                 _logger.LogInformation("App Started -- Running Acme Certificate Loader in {DelaySeconds} Seconds", this.RunDelay.TotalSeconds);
 
                 await Task.Delay(this.RunDelay, stoppingToken);

src/LettuceEncrypt/LettuceEncryptOptions.cs

@@ -103,4 +103,10 @@ public bool UseStagingServer
     /// Optional EAB (External Account Binding) account credentials used for creating new account.
     /// </summary>
     public EabCredentials EabCredentials { get; set; } = new();
+
+    /// <summary>
+    /// The delay before the ACME Certificate Renewal Starts After Startup.
+    /// Default is 5 seconds. But for container setups with healthchecks, may need to be longer.
+    /// </summary>
+    public TimeSpan StartupRunDelay { get; set; } = TimeSpan.FromSeconds(5);
 }

src/LettuceEncrypt/PublicAPI.Shipped.txt

@@ -71,6 +71,8 @@ LettuceEncrypt.LettuceEncryptOptions.RenewDaysInAdvance.get -> System.TimeSpan?
 LettuceEncrypt.LettuceEncryptOptions.RenewDaysInAdvance.set -> void
 LettuceEncrypt.LettuceEncryptOptions.UseStagingServer.get -> bool
 LettuceEncrypt.LettuceEncryptOptions.UseStagingServer.set -> void
+LettuceEncrypt.LettuceEncryptOptions.StartupRunDelay.get -> System.TimeSpan
+LettuceEncrypt.LettuceEncryptOptions.StartupRunDelay.set -> void
 Microsoft.AspNetCore.Hosting.LettuceEncryptKestrelHttpsOptionsExtensions
 Microsoft.Extensions.DependencyInjection.LettuceEncryptServiceCollectionExtensions
 static LettuceEncrypt.FileSystemStorageExtensions.PersistDataToDirectory(this LettuceEncrypt.ILettuceEncryptServiceBuilder! builder, System.IO.DirectoryInfo! directory, string? pfxPassword) -> LettuceEncrypt.ILettuceEncryptServiceBuilder!