updated docker compose to demangle postgres from synapse namespace

nextcloud/compose.yaml

@@ -9,7 +9,7 @@ services:
       - /var/lib/nextcloud/tmp:/tmp
       - ./nextcloud_data:/var/www/html
     environment:
-      - POSTGRES_HOST=synapse-postgres-1                   # Change to your Postgres IP/Hostname
+      - POSTGRES_HOST=postgres                             # Change to your Postgres IP/Hostname
       - POSTGRES_DB=${DB_NAME}                             # Your Postgres DB name
       - POSTGRES_USER=${DB_UNAME}                          # Your Postgres user
       - POSTGRES_PASSWORD=${DB_PASS}                       # Your Postgres password