F# netcore image using .NET Core tarball

Following the images from microsoft/dotnet, this uses the .NET Core SDK gzipped tarball instead of packages, validating with the published SHA signature rather than gpg key.

library/fsharp

@@ -1,13 +1,13 @@
 Maintainers: Dave Curylo <[email protected]> (@ninjarobot),
              Steve Desmond <[email protected]> (@stevedesmond-ca)
 GitRepo: https://github.com/fsprojects/docker-fsharp.git
-GitCommit: ef2d7dc371582b2d0b8d305c06c5dd2b873c0073
+GitCommit: 14aa545ada5203e932fc4d102e66f59369ec7545
 
-Tags: latest, 4, 4.1, 4.1.29
-Directory: 4.1.29/mono
+Tags: latest, 4, 4.1, 4.1.34
+Directory: 4.1.34/mono
 
 Tags: 4.0, 4.0.1, 4.0.1.1
 Directory: 4.0.1.1
 
-Tags: core, 4-core, 4.1-core, 4.1.29-core
-Directory: 4.1.29/netcore
+Tags: netcore, 4-netcore, 4.1-netcore, 4.1.34-netcore
+Directory: 4.1.34/netcore