Remove container_name from docker-compose to fix redeploy conflicts

Portainer fails to redeploy when the old containers still exist
with the same hardcoded names. Letting Compose auto-name them
based on the stack/project avoids the conflict.

Co-authored-by: Cursor <cursoragent@cursor.com>

docker-compose.yml

@@ -6,7 +6,6 @@ services:
     build:
       context: .
       dockerfile: Dockerfile
-    container_name: indeedhub-app
     restart: unless-stopped
     ports:
       - "7777:7777"
@@ -27,7 +26,6 @@ services:
   # ── Nostr Relay (stores comments, reactions, profiles) ───────
   relay:
     image: scsibug/nostr-rs-relay:latest
-    container_name: indeedhub-relay
     restart: unless-stopped
     volumes:
       - relay-data:/usr/src/app/db
@@ -40,7 +38,6 @@ services:
     build:
       context: .
       dockerfile: Dockerfile.seed
-    container_name: indeedhub-seeder
     depends_on:
       - relay
     environment: