Add instructions for using builder pattern

BuildOptimizedImages/src/Web/Dockerfile

@@ -0,0 +1,11 @@
+FROM microsoft/aspnetcore-build:1.0.1
+
+RUN mkdir /app
+WORKDIR /app
+
+ADD project.json .
+RUN dotnet restore --no-cache
+
+ADD . .
+RUN dotnet publish --output /out/. --configuration Release
+ADD Dockerfile.deploy /out/Dockerfile

BuildOptimizedImages/src/Web/Dockerfile.deploy

@@ -0,0 +1,7 @@
+FROM microsoft/dotnet:1.0.1-core
+
+RUN mkdir /app
+WORKDIR /app
+ADD . .
+
+CMD dotnet app.dll

BuildOptimizedImages/src/Web/project.json

@@ -57,7 +57,6 @@
   },
 
   "scripts": {
-    "prepublish": [ "bower install", "dotnet bundle" ],
-    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
+    "prepublish": [ "bower install", "dotnet bundle" ]
   }
 }

README.md

@@ -1,2 +1,17 @@
 # BuildASPDotNetInAContainer
 Sample used to build and test an ASP.NET Core Web app in a container
+
+# Builder container pattern
+
+Here's how to build the app in a container with the full .NET Core SDK, publish, export and then import in a smaller runtime container image:
+
+1. `cd BuildOptimizedImages\src\Web`
+2. `$image_id = docker build -q .`
+3. `$container_id = docker create $image_id.split(":")[1]`
+4. `$tmp_folder_name = [System.IO.Path]::Combine([System.IO.Path]::GetTempPath() + [System.IO.Path]::GetRandomFileName())`
+5.  `mkdir $tmp_folder_name`
+6. ``docker cp $container_id`:/out $tmp_folder_name``
+7. `docker rm $container_id`
+8. `docker build -t app $tmp_folder_name\out`
+9. `Remove-Item -Recurse -Force $tmp_folder_name`
+10. `docker run app`