[Dotnet] Fix powershell errors with arm64 (devcontainers#958)

Author: samruddhikhandale

src/dotnet/.devcontainer/Dockerfile

@@ -9,11 +9,24 @@ ENV NUGET_XMLDOC_MODE=
 # Temporary: Upgrade packages due to mentioned CVEs
 # They are installed by the base image (mcr.microsoft.com/dotnet/sdk) which does not have the patch.
 # https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-0057
-RUN apt-get update && \
-    apt-get install -y wget && \
-    ARCHITECTURE=$(dpkg --print-architecture) && \
-    POWERSHELL_FILE_NAME="powershell_7.4.1-1.deb_${ARCHITECTURE}.deb" && \
-    wget https://github.com/PowerShell/PowerShell/releases/download/v7.4.1/${POWERSHELL_FILE_NAME} && \
-    dpkg -i ${POWERSHELL_FILE_NAME} && \
-    apt-get install -f && \
-    rm ${POWERSHELL_FILE_NAME}
+RUN if [ "$(dpkg --print-architecture)" = "amd64" ]; then \
+        apt-get update && \
+        apt-get install -y wget && \
+        POWERSHELL_FILE_NAME="powershell_7.4.1-1.deb_amd64.deb" && \
+        wget https://github.com/PowerShell/PowerShell/releases/download/v7.4.1/${POWERSHELL_FILE_NAME} && \
+        dpkg -i ${POWERSHELL_FILE_NAME} && \
+        apt-get install -f && \
+        rm ${POWERSHELL_FILE_NAME} ; \
+    fi
+
+RUN if [ "$(dpkg --print-architecture)" = "arm64" ]; then \
+        apt-get update && \
+        apt-get install -y curl tar && \
+        POWERSHELL_FILE_PATH="/opt/microsoft/powershell/7" && \
+        curl -L -o /tmp/powershell.tar.gz https://github.com/PowerShell/PowerShell/releases/download/v7.4.1/powershell-7.4.1-linux-arm64.tar.gz && \
+        mkdir -p ${POWERSHELL_FILE_PATH} && \
+        tar zxf /tmp/powershell.tar.gz -C ${POWERSHELL_FILE_PATH} && \
+        chmod +x ${POWERSHELL_FILE_PATH}/pwsh && \
+        ln -snf ${POWERSHELL_FILE_PATH}/pwsh /usr/bin/pwsh && \
+        rm /tmp/powershell.tar.gz ; \
+    fi