Fix node install and make mock_llm script executable

scripts/bootstrap.sh

@@ -53,18 +53,17 @@ if [ -z "${SIA_INSTALL_NO_ITB}" ]; then
         google-chrome-stable
 fi
 
-# Install Rust
-curl https://sh.rustup.rs -sSf | bash -s -- -y
-export PATH="/root/.cargo/bin:${PATH}"
-
 # Install Node.js
 if [ -z "${SIA_INSTALL_NO_CORE}" ]; then
     echo "Installing Node.js..."
-    curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.1/install.sh | bash
-    export NVM_DIR=/root/.nvm
-    . "$NVM_DIR/nvm.sh" && nvm install node
+    curl -fsSL https://deb.nodesource.com/setup_20.x | bash -
+    apt-get install -y nodejs
 fi
 
+# Install Rust
+curl https://sh.rustup.rs -sSf | bash -s -- -y
+export PATH="/root/.cargo/bin:${PATH}"
+
 # Install llama.cpp
 cd /
 curl -O https://git.nielsgeens.be/api/packages/llm/generic/llama.cpp/b5269/llama.cpp.tar