smart auto-install multiple versions for `node` (#56)

* node

* fix comment (no-ci)

* Apply suggestions from code review
Co-authored-by: Samruddhi Khandale <skhandale@microsoft.com>

* update test scenario

* remove minor for node 18

* update scenarios to object notation

* add shabang

* only set default node once
Co-authored-by: Samruddhi Khandale <skhandale@microsoft.com>

.github/workflows/test-pr-temp-tweak.yml

+name: "test"
+on:
+  pull_request:
+    paths-ignore:
+      - ./**/oryx/**
+      - ./**/java/**
+      - ./**/dotnet/**
+      - ./**/php/**
+      - ./**/node/**
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo "No build required ; Temporary tweak for merging the PRs until branch protection rules are updated"'

.github/workflows/test-pr.yaml

@@ -39,7 +39,7 @@ jobs:
             terraform: ./**/terraform/**
 
   test:
-    needs: detect-changes
+    needs: [detect-changes]
     runs-on: ubuntu-latest
     continue-on-error: true
     strategy:

src/node/devcontainer-feature.json

@@ -34,9 +34,5 @@
         "NVM_DIR": "/usr/local/share/nvm",
         "NVM_SYMLINK_CURRENT": "true",
         "PATH": "${NVM_DIR}/current/bin:${PATH}"
-    },
-    "install": {
-        "app": "",
-        "file": "install.sh"
     }
-}
\ No newline at end of file
+}

src/node/install.sh

@@ -11,6 +11,10 @@ export NODE_VERSION=${VERSION:-"lts"}
 export NVM_DIR=${NVM_INSTALL_PATH:-"/usr/local/share/nvm"}
 INSTALL_TOOLS_FOR_NODE_GYP="${INSTALL_TOOLS_FOR_NODE_GYP:-true}"
 
+# Comma-separated list of node versions to be installed (with nvm)
+# alongside NODE_VERSION, but not set as default.
+ADDITIONAL_VERSIONS=${ADDITIONAL_VERSIONS:-""}
+
 USERNAME=${USERNAME:-"automatic"}
 UPDATE_RC=${UPDATE_RC:-"true"}
 
@@ -133,7 +137,7 @@ su ${USERNAME} -c "$(cat << EOF
     if [ "${NODE_VERSION}" != "" ]; then
         nvm alias default ${NODE_VERSION}
     fi
-    nvm clear-cache 
+    nvm clear-cache
 EOF
 )" 2>&1
 # Update rc files
@@ -146,6 +150,25 @@ EOF
 )"
 fi
 
+# Additional node versions to be installed but not be set as default.
+if [ ! -z "${ADDITIONAL_VERSIONS}" ]; then
+
+    OLDIFS=$IFS
+    IFS=","
+        read -a additional_versions <<< "$ADDITIONAL_VERSIONS"
+        for ver in "${additional_versions[@]}"; do
+            su ${USERNAME} -c ". $NVM_DIR/nvm.sh && nvm install ${ver}"
+            su ${USERNAME} -c ". $NVM_DIR/nvm.sh && nvm clear-cache"
+            # Reset the NODE_VERSION as the default version on the path.
+        done
+
+        # Ensure $NODE_VERSION is on the $PATH
+        if [ "${NODE_VERSION}" != "" ]; then
+                su ${USERNAME} -c ". $NVM_DIR/nvm.sh && nvm use default"
+        fi
+    IFS=$OLDIFS
+fi
+
 # If enabled, verify "python3", "make", "gcc", "g++" commands are available so node-gyp works - https://github.com/nodejs/node-gyp
 if [ "${INSTALL_TOOLS_FOR_NODE_GYP}" = "true" ]; then
     echo "Verifying node-gyp OS requirements..."

test-scenarios/install_additional_node.sh

+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# 'latest' is some version of node 18 for a while.
+check "version_on_path"  node -v | grep 18
+
+check "v18_installed" ls -1 /usr/local/share/nvm/versions/node | grep 18
+check "v14_installed" ls -1 /usr/local/share/nvm/versions/node | grep 14.19.3
+check "v17_installed" ls -1 /usr/local/share/nvm/versions/node | grep 17.9.1
+
+
+# Report result
+reportResults

test-scenarios/scenarios.json

@@ -12,6 +12,15 @@
             }
         }
     },
+    "install_additional_node": {
+        "image": "debian:11",
+        "features": {
+            "node": {
+                "version": "latest",
+                "additional_versions": "v17.9.1,v14.19.3"
+            }
+        }
+    },
     "install_additional_python": {
         "image": "ubuntu:focal",
         "features": {