networks:

mynet:
    driver: bridge

docker-compose.yaml

@@ -10,6 +10,8 @@ services:
      - POSTGRES_USER=synapse
      - POSTGRES_PASSWORD=jgzqnGCq3KY28C
      - POSTGRES_INITDB_ARGS=--encoding='UTF8' --lc-collate='C' --lc-ctype='C'
+    networks:
+      - mynet
 
   element:
     image: vectorim/element-web:latest
@@ -18,6 +20,8 @@ services:
       - ./element-config.json:/app/config.json
     ports:
       - "8701:80"
+    networks:
+      - mynet
 
   synapse:
     image: matrixdotorg/synapse:latest
@@ -32,6 +36,8 @@ services:
      - POSTGRES_PASSWORD=jgzqnGCq3KY28C
      - SYNAPSE_SERVER_NAME=matrix.server-nb.de
      - SYNAPSE_REPORT_STATS=no
+    networks:
+      - mynet
 
   synapse-admin:
     image: awesometechnologies/synapse-admin:latest
@@ -40,13 +46,17 @@ services:
       - "8703:80"
     environment:
       - REACT_APP_SERVER="https://matrix.server-nb.de"
+    networks:
+    - mynet
 
   mautrix-whatsapp:
-      container_name: mautrix-whatsapp
-      image: dock.mau.dev/mautrix/whatsapp:latest
-      restart: unless-stopped
-      volumes:
+    container_name: mautrix-whatsapp
+    image: dock.mau.dev/mautrix/whatsapp:latest
+    restart: unless-stopped
+    volumes:
       - ./synapse/mautrix-whatsapp:/data
+    networks:
+      - mynet
       
   postgres-whatsapp:
       image: postgres:14
@@ -57,5 +67,10 @@ services:
        - POSTGRES_DB=whatsapp
        - POSTGRES_USER=whatsapp
        - POSTGRES_PASSWORD=jgzqnGCq3KY28C
-       
+      networks:
+      - mynet
+      
+networks:
+  mynet:
+    driver: bridge