setting DB name

immich-compose.yml

@@ -15,7 +15,7 @@ services:
       # Optional: Mount an existing photo library as a read-only external library
       # - ${EXTERNAL_LIBRARY_PATH}:/mnt/external:ro
     environment:
-      DB_HOSTNAME: database
+      DB_HOSTNAME: postgres
       DB_USERNAME: ${DB_USERNAME}
       DB_PASSWORD: ${DB_PASSWORD}
       DB_DATABASE_NAME: ${DB_DATABASE_NAME}