diff --git a/tarkov/v4.0.11/Dockerfile b/tarkov/v4.0.11/Dockerfile
index a6d1921..9bc559d 100644
--- a/tarkov/v4.0.11/Dockerfile
+++ b/tarkov/v4.0.11/Dockerfile
@@ -20,13 +20,14 @@ RUN         wget -q https://dot.net/v1/dotnet-install.sh \
             && ./dotnet-install.sh -i /usr/share -v "$D_V" \
             && ln -s /usr/share/dotnet /usr/bin/dotnet \
             && rm dotnet-install.sh
-			
-RUN 		source /etc/os-release \
-			&& wget -q https://packages.microsoft.com/config/ubuntu/$VERSION_ID/packages-microsoft-prod.deb \
-			&& sudo dpkg -i packages-microsoft-prod.deb \
-			&& rm packages-microsoft-prod.deb \
-			&& sudo apt-get update \
-			&& sudo apt-get install -y powershell
+
+# 3. Install PowerShell (Fixed: No 'source', No 'sudo', Hardcoded 'jammy' repo)
+RUN         mkdir -p /etc/apt/keyrings \
+            && curl -sSL https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor -o /etc/apt/keyrings/microsoft-prod.gpg \
+            && echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/microsoft-prod.gpg] https://packages.microsoft.com/repos/microsoft-ubuntu-jammy-prod jammy main" > /etc/apt/sources.list.d/microsoft-prod.list \
+            && apt-get update \
+            && apt-get install -y powershell \
+            && rm -rf /var/lib/apt/lists/*
 
 # 4. Install remaining dependencies
 RUN         apt-get update && apt-get install -y \