moved the init step into one shell command to load it all, and don't use

the secret.rb file

Jenkinsfile

@@ -7,9 +7,11 @@ pipeline {
   stages {
     stage('Init') {
       steps {
-        sh 'rbenv local 3.2.2'
-        sh 'echo "ENV[\\\"APP_SESSION_SECRET\\\"] ||= $(ruby secret.rb)" > .env.rb'
-        sh 'echo "ENV[\\\"DB_NAME\\\"] ||= \\\"${DB_NAME}\\\"" >> .env.rb'
+        sh ''' #!/usr/local/bin/bash
+          rbenv local 3.2.2
+          echo 'ENV["APP_SESSION_SECRET"] ||= $(ruby -rsecurerandom -e "puts SecureRandom.base64(64).inspect()")' > .env.rb
+          echo 'ENV["DB_NAME"] ||= "${DB_NAME}"' >> .env.rb
+        '''
       }
     }
     stage('Build dependencies') {