cloudron-support: add node version check

scripts/cloudron-support

@@ -199,6 +199,22 @@ function check_nginx() {
     success "nginx is running"
 }
 
+function check_node() {
+    expected_node_version="$(sed -ne 's/readonly node_version=\(.*\)/\1/p' /home/yellowtent/box/scripts/installer.sh)"
+    current_node_version="$(node --version | tr -d '\n' | cut -c2-)" # strip trailing newline and 'v' prefix
+
+    if [[ "${current_node_version}" != "${expected_node_version}" ]]; then
+        fail "node version is incorrect. Expecting ${expected_node_version}. Got ${current_node_version}."
+        echo "You can try the following to fix the problem:"
+        echo "    ln -sf /usr/local/node-${expected_node_version}/bin/node /usr/bin/node"
+        echo "    ln -sf /usr/local/node-${expected_node_version}/bin/npm /usr/bin/npm"
+        echo "    systemctl restart box"
+        exit 1
+    fi
+
+    success "node version is correct"
+}
+
 function check_docker() {
     if ! systemctl is-active -q docker; then
         info "Docker is down. Trying to restart docker ..."
@@ -282,9 +298,10 @@ EOF
 
 function troubleshoot() {
     # note: disk space test has already been run globally
-    check_nginx
+    check_node
     check_docker
     check_host_mysql
+    check_nginx # requires mysql to be checked
     check_box
     check_unbound
     check_hairpin_nat # requires mysql to be checked