Create lib.sh

lib.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+# https://github.com/devcontainers/features/blob/9fd5daf06b40794a067c4cdbb8e258d99eeefc24/src/node/install.sh
+apt_get_update() {
+    if [ "$(find /var/lib/apt/lists/* | wc -l)" = "0" ]; then
+        echo "Running apt-get update..."
+        apt-get update -y
+    fi
+}
+
+# https://github.com/devcontainers/features/blob/9fd5daf06b40794a067c4cdbb8e258d99eeefc24/src/node/install.sh
+# Checks if packages are installed and installs them if not
+check_packages() {
+    if ! dpkg -s "$@" > /dev/null 2>&1; then
+        apt_get_update
+        apt-get -y install --no-install-recommends "$@"
+    fi
+}