Remove workaround for missing package on nuget.org 

Update the aspnetcore-build images to contain the 2.0.2 .NET Core SDK (… …#312)

Update the 2.0 images and tags to ASP.NET Core 2.0.0 Merges staging into master

Merge pull request #255 from aspnet/staging Adding 2.0.0-preview2 Dockerfiles

Add 2.0.0-preview1 images 

⚠️ Move 'latest' and 'lts' tags to MSBuild SDK instead of projectjson Update build images to RC4 Update README.md React to changes in dotnet new Fix test script and include more test logging

ASP.NET Core 1.0.1 1. Packages cache (1.0.1 10055 build) 2. Preload node, npm, gulp and bower