Fixed: Don't block updates under docker unless configured in package_info

src/NzbDrone.Core.Test/UpdateTests/UpdateServiceFixture.cs

@@ -328,6 +328,28 @@ namespace NzbDrone.Core.Test.UpdateTests
                   .Verify(v => v.SaveConfigDictionary(It.Is<Dictionary<string, object>>(d => d.ContainsKey("Branch") && (string)d["Branch"] == "fake")), Times.Once());
         }
 
+        [Test]
+        public void should_not_update_with_built_in_updater_inside_docker_container()
+        {
+            Mocker.GetMock<IDeploymentInfoProvider>().Setup(x => x.PackageUpdateMechanism).Returns(UpdateMechanism.Docker);
+
+            Subject.Execute(new ApplicationUpdateCommand());
+
+            Mocker.GetMock<IProcessProvider>()
+                .Verify(c => c.Start(It.IsAny<string>(), It.Is<string>(s => s.StartsWith("12")), null, null, null), Times.Never());
+        }
+
+        [Test]
+        public void should_not_update_with_built_in_updater_when_external_updater_is_configured()
+        {
+            Mocker.GetMock<IDeploymentInfoProvider>().Setup(x => x.IsExternalUpdateMechanism).Returns(true);
+
+            Subject.Execute(new ApplicationUpdateCommand());
+
+            Mocker.GetMock<IProcessProvider>()
+                .Verify(c => c.Start(It.IsAny<string>(), It.Is<string>(s => s.StartsWith("12")), null, null, null), Times.Never());
+        }
+
         [TearDown]
         public void TearDown()
         {

src/NzbDrone.Core/Update/InstallUpdateService.cs

@@ -237,15 +237,15 @@ namespace NzbDrone.Core.Update
                 return null;
             }
 
-            if (_osInfo.IsDocker)
+            if (OsInfo.IsNotWindows && !_configFileProvider.UpdateAutomatically && updateTrigger != CommandTrigger.Manual)
             {
-                _logger.ProgressDebug("Updating is disabled inside a docker container.  Please update the container image.");
+                _logger.ProgressDebug("Auto-update not enabled, not installing available update.");
                 return null;
             }
 
-            if (OsInfo.IsNotWindows && !_configFileProvider.UpdateAutomatically && updateTrigger != CommandTrigger.Manual)
+            if (_configFileProvider.UpdateMechanism == UpdateMechanism.BuiltIn && _deploymentInfoProvider.PackageUpdateMechanism == UpdateMechanism.Docker)
             {
-                _logger.ProgressDebug("Auto-update not enabled, not installing available update.");
+                _logger.ProgressDebug("Built-In updater disabled inside a docker container. Please update the container image.");
                 return null;
             }