fix etherpad injoignable

dockercompose/docker-compose.yml

@@ -66,14 +66,22 @@ services:
       retries: 5
     networks:
       - app-network
+
   etherpad:
-    image: etherpad/etherpad
+    image: etherpad/etherpad:1.9.7
     ports:
       - "9001:9001"
     volumes:
       - ../doodlestudent/api/APIKEY.txt:/opt/etherpad-lite/APIKEY.txt
     networks:
       - app-network
+    healthcheck:
+      test: ["CMD-SHELL", "node -e \"require('http').get('http://127.0.0.1:9001', res => { process.exit(res.statusCode===200?0:1) }).on('error', ()=>process.exit(1))\""]
+      interval: 30s
+      timeout: 10s
+      start_period: 15s
+      retries: 5
+
   mail:
     image: bytemark/smtp
     restart: always
@@ -82,7 +90,7 @@ services:
     networks:
       - app-network
 
-networks:
-  app-network:
-    #external: false
-    name: app-network
+networks: # Declare the network to be used by the services
+  app-network: # Is a user-defined network
+    #external: false # If true, Docker Compose will look for an existing network with the same name and use it. If false or not specified, Docker Compose will create a new network.
+    name: app-network #Name of the network (optional, Docker Compose will generate one if not provided)