Feat/fireflyiii (#344)

* Adding Firefly-iii opt fragment

* Adding environment variable to force creation of db

* Instructing postgres to create database

* Switching exposing default port, running create db command

* Remove grep command for postgres container

* Removing database creation on postgres container start

* Adding required App Key env variable

* Updating nginx rewriting

* Updating firefly nginx confugration traying to make it work with subdirectory

https://github.com/firefly-iii/firefly-iii/issues/2848#issuecomment-557845301

* Trying to rewrite

* Reconfiguring nginx to pass headers

* Updating docker fragment

* Last try

* Allowing firefly iii to be hosted on other domain

* Fixing docker compose env variables

* Exposing ports for external communication

* Ports exposing

* Updating firefly host reference

* Matching service name and VIRTUAL_HOST_NAME

* Getting nginx to redirect to port 8080

* update and adapt

* Adapt firefly to be with dedicated domain

* Adapt Docker file builder to support non github builds

* Make firefly init create db only if not exists + run full recommended upgrade procedure

Co-authored-by: rockstardev <rockstardev@users.noreply.github.com>

contrib/DockerFileBuildHelper/DockerInfo.cs

@@ -14,10 +14,10 @@ namespace DockerFileBuildHelper
         public string GitRef { get; set; }
         public bool SupportedByUs { get; set; }
         public Image Image { get; internal set; }
-
+        public string RawLink { get; set; }
         public string GetGithubLinkOf(string path)
         {
-            return $"https://raw.githubusercontent.com/{GitLink.Substring("https://github.com/".Length)}/{GitRef}/{path}";
+            return RawLink ?? $"https://raw.githubusercontent.com/{GitLink.Substring("https://github.com/".Length)}{(GitRef is null ? string.Empty : ("/" + GitRef))}/{path}";
         }
     }
 }