fix: run mod download with ContainerAdministrator (#194)

Author: mdelapenya

windows/Dockerfile

@@ -9,10 +9,16 @@ ENV CGO_ENABLED=0
 
 WORKDIR /app
 
+# Switch to admin user for module operations
+USER ContainerAdministrator
+
 # Install source deps
 COPY go.mod go.sum ./
 RUN go mod download
 
+# Switch back to regular user for security
+USER ContainerUser
+
 # Copy source & build
 COPY . .
 RUN go build -v -ldflags "-s" -o /bin/ryuk