various improvements:

using mono audio;
options to store recordings;
multple backends;
new audio file name;
sessions;

Dockerfile

@@ -37,7 +37,7 @@ COPY package*.json ./
 
 
 # Install dependencies
-RUN npm install ws express request #--only=production
+RUN npm install ws express request node-persist body-parser dotenv #--only=production
 
 # Copy the rest of the application files
 COPY . .
@@ -45,6 +45,7 @@ COPY . .
 # Start the application
 #CMD ["npm", "start"]
 CMD npm start
+# portainer: '-c' 'echo Container started; trap "exit 0" 15; exec npm start'
 
 EXPOSE 8080 8081