adding in postgres nextcloud sample yaml for futre reference

nextcloud/compose_postgres.yaml

@@ -0,0 +1,40 @@
+# example docker conpose file using postgres for future reference.
+# nextcloud recommends against using sqlite,which is what i'm using!
+version: '3'
+
+services:
+  app:
+    image: nextcloud
+    restart: always
+    ports:
+      - 8080:80
+    environment:
+      POSTGRES_HOST: db
+      POSTGRES_DB: nextcloud
+      POSTGRES_USER: nextcloud
+      POSTGRES_PASSWORD: nextcloud
+    volumes:
+      - nextcloud:/var/www/html
+    depends_on:
+      - db
+    networks:
+      - nextcloud_network
+
+  db:
+    image: postgres
+    restart: always
+    environment:
+      POSTGRES_DB: nextcloud
+      POSTGRES_USER: nextcloud
+      POSTGRES_PASSWORD: nextcloud
+    volumes:
+      - db:/var/lib/postgresql/data
+    networks:
+      - nextcloud_network
+
+volumes:
+  nextcloud:
+  db:
+
+networks:
+  nextcloud_network: