improve docker setup

docker-compose.prod.yml

@@ -1,7 +1,16 @@
 version: "3"
 
+volumes:
+  db_data: {}
+
 services:
   postgres:
+    volumes:
+      - db_data:/var/lib/postgresql/data
+      - type: bind
+        source: /home/ubuntu/postgresql/conf/postgresql.conf
+        target: /etc/postgresql/postgresql.conf
+        read_only: true
     logging:
       driver: loki
       options:

docker-compose.yml

@@ -1,4 +1,4 @@
-version: '3.8'
+version: "3.8"
 
 services:
   # Postgres Database
@@ -12,7 +12,6 @@ services:
     ports:
       - "${DB_PORT}:${DB_PORT}"
     volumes:
-      #      - ./indexers/db/data/postgres:/var/lib/postgresql/data
       - ./indexers/db/docker-entrypoint-initdb.d/init-db.sql:/docker-entrypoint-initdb.d/init-db.sql
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U postgres"]
@@ -228,4 +227,4 @@ services:
       test: ["CMD", "curl", "-f", "http://staking-subquery-node:3000/ready"]
       interval: 3s
       timeout: 5s
-      retries: 10
+      retries: 10