Fix paperless db connection

paperless/docker-compose.yml

@@ -15,7 +15,7 @@ services:
       POSTGRES_USER: ${POSTGRES_USER}
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
 
-  webserver:
+  paperless:
     image: ghcr.io/paperless-ngx/paperless-ngx:2.13.5
     restart: unless-stopped
     depends_on:
@@ -34,6 +34,9 @@ services:
     environment:
       PAPERLESS_REDIS: redis://broker:6379
       PAPERLESS_DBHOST: db
+      PAPERLESS_DBNAME: ${POSTGRES_DB}
+      PAPERLESS_DBUSER: ${POSTGRES_USER}
+      PAPERLESS_DBPASS: ${POSTGRES_PASSWORD}
       PAPERLESS_TIKA_ENABLED: 1
       PAPERLESS_TIKA_GOTENBERG_ENDPOINT: http://gotenberg:3000
       PAPERLESS_TIKA_ENDPOINT: http://tika:9998