postgres via sqlx - workable?

compose.yaml

@@ -1,6 +1,5 @@
 services:
-  mnemosyne:
-    container_name: mnemosyne
+  core:
     build:
       context: .
       target: final
@@ -8,19 +7,33 @@ services:
       - 39321:39321
     restart: unless-stopped
     volumes:
-      # Mnemosyne would greatly enjoy not having an ephemeral database.
-      # If you're okay with storing it side by side with the compose file,
-      # a bind mount like this is one way to do it. Remember to mkdir!
       - ./mnemodata:/app/data
-      # Another way is to use a docker volume.
-      # - mnemodata:/app/data
     environment:
-      # DATABASE_URL is crucial for Mnemosyne to work; it will fail without it.
-      # Point it at where you'd like your database to be.
-      - DATABASE_URL=/app/data/db.db
-      # Mnemosyne uses port 39321 for HTTP by default;
-      # - PORT=39321
+      # - PORT=39321 # Mnemosyne uses port 39321 for HTTP by default;
+      - DATABASE_URL=postgres://mnemo:syne@postgres:5432/mnemosyne
+    networks:
+      - mnemosyne
+    depends_on:
+      - postgres
+  postgres:
+    image: postgres:18.3-alpine3.23
+    restart: unless-stopped
+    ports:
+      - 5432:5432
+    volumes:
+      - pg_volume:/var/lib/postgresql/data:rw
+    stop_grace_period: 120s
+    environment:
+      POSTGRES_USER: mnemo
+      POSTGRES_PASSWORD: syne
+      POSTGRES_DB: mnemosyne
+    networks:
+      - mnemosyne
 
-# Declaring a volume for the docker volume example.
-# volumes:
-#   mnemodata:
+networks:
+  mnemosyne:
+    driver: bridge
+
+volumes:
+  pg_volume:
+    driver: local