Add ASP.NET devfile

devfiles/dotnet-asp.net/devfile.yaml

@@ -0,0 +1,67 @@
+---
+apiVersion: 1.0.0
+metadata:
+  generateName: asp.net-
+projects:
+  -
+    name: aspnetcore-example
+    source:
+      type: git
+      location: "https://github.com/che-samples/aspnetcore-realworld-example-app"
+components:
+  -
+    type: chePlugin
+    id: redhat-developer/che-omnisharp-plugin/latest
+    memoryLimit: 1024Mi
+  -
+    type: chePlugin
+    id: redhat-developer/netcoredbg-theia-plugin/latest
+    memoryLimit: 512Mi
+  -
+    type: dockerimage
+    alias: dotnet
+    image: quay.io/eclipse/che-dotnet-2.2:nightly
+    command: ['sleep']
+    args: ['infinity']
+    env:
+      - name: HOME
+        value: /home/user
+      - name: PS1
+        value: $(echo ${0})\\$
+    memoryLimit: 512Mi
+    endpoints:
+      - name: '5000'
+        port: 5000
+    mountSources: true
+    volumes:
+      - name: dotnet
+        containerPath: "/home/user"
+commands:
+  -
+    name: install Cake
+    actions:
+      - type: exec
+        component: dotnet
+        command: "dotnet tool install -g Cake.Tool"
+        workdir: ${CHE_PROJECTS_ROOT}/aspnetcore-example
+  -
+    name: build
+    actions:
+      - type: exec
+        component: dotnet
+        command: "$HOME/.dotnet/tools/dotnet-cake --runtime=linux-x64"
+        workdir: ${CHE_PROJECTS_ROOT}/aspnetcore-example
+  -
+    name: re-build
+    actions:
+      - type: exec
+        component: dotnet
+        command: "$HOME/.dotnet/tools/dotnet-cake --target=Rebuild --runtime=linux-x64"
+        workdir: ${CHE_PROJECTS_ROOT}/aspnetcore-example
+  -
+    name: run server
+    actions:
+      - type: exec
+        component: dotnet
+        command: "dotnet run --project src/Conduit/Conduit.csproj"
+        workdir: ${CHE_PROJECTS_ROOT}/aspnetcore-example

devfiles/dotnet-asp.net/meta.yaml

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+---
+displayName: "ASP.NET Core Web Application"
+description: Stack for developing ASP.NET Core Web Application
+tags: ["Debian", "Dotnet", "C#", "ASP.NET"]
+icon: https://www.eclipse.org/che/images/logo-eclipseche.svg
+globalMemoryLimit: 2710Mi