Updated Jenkinsfile to use latest containerized build agent.

Jenkinsfile

@@ -1,33 +1,28 @@
 pipeline {
     agent any
-    environment {
-        PATH = "/home/jenkins/.local/share/fnm:${PATH}"
-    }
     stages {
         stage("install") {
             steps {
-                sh 'brew install node@16'
-                sh 'npm install'
+                sh 'conda env create -f environment.yml'
+                sh 'conda activate webdev && npm install'
             }
         }
         stage("test") {
             steps {
-                sh '''
-                npm run test:junit
-                '''
+                sh 'conda activate webdev && npm run test:junit'
                 junit 'junit/*.xml'
             }
         }
         stage("build") {
             steps {
-                sh 'npm run build:prod'
+                sh 'conda activate webdev && npm run build:prod'
                 fingerprint "dist/**"
                 archiveArtifacts artifacts: 'dist/audioshowkit.js', followSymlinks: false
             }
         }
         stage("generate docs") {
             steps {
-                sh 'npm run docs'
+                sh 'conda activate webdev && npm run docs'
                 publishHTML([allowMissing: false, alwaysLinkToLastBuild: true, keepAll: true, reportDir: './docs', reportFiles: 'index.html', reportName: 'AudioShowKit Docs', reportTitles: ''])
             }
         }