Remove net9

Author: Martin-Molinero

DockerfileLeanFoundation

@@ -410,7 +410,7 @@ RUN apt-get update && apt-get -y install libasound2 libnss3 libnspr4 && apt-get
     rm ibgateway-latest-standalone-linux-x64.v10.39.1f.sh
 
 # Install dotnet sdk & runtime
-RUN add-apt-repository ppa:dotnet/backports && apt-get update && apt-get install -y dotnet-sdk-10.0 dotnet-sdk-9.0 && \
+RUN add-apt-repository ppa:dotnet/backports && apt-get update && apt-get install -y dotnet-sdk-10.0 && \
     apt-get clean && apt-get autoclean && apt-get autoremove --purge -y && rm -rf /var/lib/apt/lists/*
 
 # label definitions

DockerfileLeanFoundationARM

@@ -267,7 +267,7 @@ RUN wget -q https://cdn.quantconnect.com/fonts/foundation.zip && unzip -q founda
 ENV PATH="/root/.dotnet:${PATH}"
 RUN wget https://dot.net/v1/dotnet-install.sh && \
     chmod 777 dotnet-install.sh && \
-    ./dotnet-install.sh -c 10.0 && ./dotnet-install.sh -c 9.0 && \
+    ./dotnet-install.sh -c 10.0 && \
     rm dotnet-install.sh
 ENV DOTNET_ROOT="/root/.dotnet"