Breaking Changes: Docker Parity (#698)

* Refactored all the config files for Kavita to be loaded from config/. This will allow docker to just mount one folder and for Update functionality to be trivial.

* Cleaned up documentation around new update method.

* Updated docker files to support config directory

* Removed entrypoint, no longer needed

* Update appsettings to point to config directory for logs

* Updated message for docker users that are upgrading

* Ensure that docker users that have not updated their mount points from upgrade cannot start the server

* Code smells

* More cleanup

* Added entrypoint to fix bind mount issues

* Updated README with new folder structure

* Fixed build system for new setup

* Updated string path if user is docker

* Updated the migration flow for docker to work properly and Fixed LogFile configuration updating.

* Migrating docker images is now working 100%

* Fixed config from bad code

* Code cleanup

Co-authored-by: Chris Plaatjes <kizaing@gmail.com>

API/config/appsettings.Development.json

@@ -0,0 +1,22 @@
+{
+  "ConnectionStrings": {
+    "DefaultConnection": "Data source=config//kavita.db"
+  },
+  "TokenKey": "super secret unguessable key",
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft": "Information",
+      "Microsoft.Hosting.Lifetime": "Error",
+      "Hangfire": "Information",
+      "Microsoft.AspNetCore.Hosting.Internal.WebHost": "Information"
+    },
+    "File": {
+      "Path": "config//logs/kavita.log",
+      "Append": "True",
+      "FileSizeLimitBytes": 26214400,
+      "MaxRollingFiles": 2
+    }
+  },
+  "Port": 5000
+}