Fix docker file

Author: mmanela

Dockerfile

@@ -1,9 +1,9 @@
-FROM mcr.microsoft.com/dotnet/sdk:8.0
+FROM mcr.microsoft.com/dotnet/sdk:9.0
 WORKDIR /scip-dotnet
 ADD . /scip-dotnet
 RUN dotnet pack
 ENV PATH="/root/.dotnet/tools:${PATH}"
-RUN dotnet tool install --framework net8.0 --add-source ScipDotnet/bin/Release/ --global scip-dotnet
+RUN dotnet tool install --framework net9.0 --add-source ScipDotnet/bin/Release/ --global scip-dotnet
 RUN dotnet clean
 WORKDIR /app
 RUN rm -rf /scip-dotnet

global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "9.0.100",
+    "version": "9.0.0",
     "rollForward": "latestMajor",
     "allowPrerelease": false
   }