Prepare for production

- Add caddy server
- Add Docker
- Minor fixes in status endpoint

src/Podsync/Controllers/StatusController.cs

@@ -1,4 +1,5 @@
-using System.Threading.Tasks;
+using System;
+using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Podsync.Services.Resolver;
 using Podsync.Services.Storage;
@@ -7,6 +8,8 @@ namespace Podsync.Controllers
 {
     public class StatusController : Controller
     {
+        private const string ErrorStatus = "ERROR";
+
         private readonly IStorageService _storageService;
         private readonly IResolverService _resolverService;
 
@@ -18,11 +21,23 @@ namespace Podsync.Controllers
 
         public async Task<string> Index()
         {
-            var time = await _storageService.Ping();
+            var storageStatus = ErrorStatus;
+
+            try
+            {
+                var time = await _storageService.Ping();
+                storageStatus = time.ToString();
+            }
+            catch (Exception)
+            {
+                // Nothing to do
+            }
+
+            var resolverStatus = _resolverService.Version ?? ErrorStatus;
 
             return $"Path: {Request.Path}\r\n" +
-                   $"Redis: {time}\r\n" +
-                   $"Resolve: {_resolverService.Version}";
+                   $"Redis: {storageStatus}\r\n" +
+                   $"Resolve: {resolverStatus}";
         }
     }
 }