Dockerfile for .NET lab spaces

Author: robrich

components/workspace/dotnet/Dockerfile

@@ -0,0 +1,15 @@
+FROM labspace-workspace-base
+
+USER root
+# https://learn.microsoft.com/en-us/dotnet/core/install/linux-debian
+RUN wget https://packages.microsoft.com/config/debian/12/packages-microsoft-prod.deb -O packages-microsoft-prod.deb \
+  && sudo dpkg -i packages-microsoft-prod.deb \
+  && rm packages-microsoft-prod.deb
+
+RUN sudo apt-get update \
+  && sudo apt-get install -y dotnet-sdk-10.0 \
+  && rm -rf /var/lib/apt/lists/*
+
+USER 1000
+RUN code-server --install-extension ms-dotnettools.csdevkit \
+  && rm -rf /home/coder/.local/share/code-server/CachedExtensionVSIXs/.trash/*