[node] Install the latest version of nvm by default (#673)

feat(node): install the latest nvm by default

src/node/devcontainer-feature.json

 {
     "id": "node",
-    "version": "1.2.1",
+    "version": "1.3.0",
     "name": "Node.js (via nvm), yarn and pnpm",
     "documentationURL": "https://github.com/devcontainers/features/tree/main/src/node",
     "description": "Installs Node.js, nvm, yarn, pnpm, and needed dependencies.",
@@ -30,7 +30,11 @@
         },
         "nvmVersion": {
             "type": "string",
-            "default": "0.39.2",
+            "proposals": [
+                "latest",
+                "0.39"
+            ],
+            "default": "latest",
             "description": "Version of NVM to install."
         }
     },

src/node/install.sh

@@ -8,7 +8,7 @@
 # Maintainer: The Dev Container spec maintainers
 
 export NODE_VERSION="${VERSION:-"lts"}"
-export NVM_VERSION="${NVMVERSION:-"0.39.2"}"
+export NVM_VERSION="${NVMVERSION:-"latest"}"
 export NVM_DIR="${NVMINSTALLPATH:-"/usr/local/share/nvm"}"
 INSTALL_TOOLS_FOR_NODE_GYP="${NODEGYPDEPENDENCIES:-true}"
 
@@ -78,6 +78,40 @@ check_packages() {
     fi
 }
 
+# Figure out correct version of a three part version number is not passed
+find_version_from_git_tags() {
+    local variable_name=$1
+    local requested_version=${!variable_name}
+    if [ "${requested_version}" = "none" ]; then return; fi
+    local repository=$2
+    local prefix=${3:-"tags/v"}
+    local separator=${4:-"."}
+    local last_part_optional=${5:-"false"}
+    if [ "$(echo "${requested_version}" | grep -o "." | wc -l)" != "2" ]; then
+        local escaped_separator=${separator//./\\.}
+        local last_part
+        if [ "${last_part_optional}" = "true" ]; then
+            last_part="(${escaped_separator}[0-9]+)?"
+        else
+            last_part="${escaped_separator}[0-9]+"
+        fi
+        local regex="${prefix}\\K[0-9]+${escaped_separator}[0-9]+${last_part}$"
+        local version_list="$(git ls-remote --tags ${repository} | grep -oP "${regex}" | tr -d ' ' | tr "${separator}" "." | sort -rV)"
+        if [ "${requested_version}" = "latest" ] || [ "${requested_version}" = "current" ] || [ "${requested_version}" = "lts" ]; then
+            declare -g ${variable_name}="$(echo "${version_list}" | head -n 1)"
+        else
+            set +e
+            declare -g ${variable_name}="$(echo "${version_list}" | grep -E -m 1 "^${requested_version//./\\.}([\\.\\s]|$)")"
+            set -e
+        fi
+    fi
+    if [ -z "${!variable_name}" ] || ! echo "${version_list}" | grep "^${!variable_name//./\\.}$" > /dev/null 2>&1; then
+        echo -e "Invalid ${variable_name} value: ${requested_version}\nValid values:\n${version_list}" >&2
+        exit 1
+    fi
+    echo "${variable_name}=${!variable_name}"
+}
+
 # Ensure apt is in non-interactive to avoid prompts
 export DEBIAN_FRONTEND=noninteractive
 
@@ -92,6 +126,10 @@ fi
 # Install dependencies
 check_packages apt-transport-https curl ca-certificates tar gnupg2 dirmngr
 
+if ! type git > /dev/null 2>&1; then
+    check_packages git
+fi
+
 # Install yarn
 if type yarn > /dev/null 2>&1; then
     echo "Yarn already installed."
@@ -112,6 +150,8 @@ elif [ "${NODE_VERSION}" = "latest" ]; then
     export NODE_VERSION="node"
 fi
 
+find_version_from_git_tags NVM_VERSION "https://github.com/nvm-sh/nvm"
+
 # Install snipppet that we will run as the user
 nvm_install_snippet="$(cat << EOF
 set -e

test/node/install_nvm_0.39.sh

+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# Definition specific tests
+check "version" bash -c "node --version"
+check "pnpm" pnpm -v
+check "nvm version" bash -c ". /usr/local/share/nvm/nvm.sh && nvm --version | grep 0.39"
+
+# Report result
+reportResults

test/node/scenarios.json

@@ -44,5 +44,13 @@
                 "version": "16"
             }
         }
+    },
+    "install_nvm_0.39": {
+        "image": "mcr.microsoft.com/devcontainers/base",
+        "features": {
+            "node": {
+                "nvmVersion": "0.39"
+            }
+        }
     }
 }