Role "postgres" already exists & Role "postgres" does not exist at the same time

I'm trying to launch my spring boot microservices project in docker compose file.

Provided User : postgres
Provided Password : password

When I try to connect service with postgres db, console says this:

2023-05-07 10:30:48 2023-05-07T07:30:48.725Z  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2023-05-07 10:30:49 2023-05-07T07:30:49.863Z ERROR 1 --- [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Exception during pool initialization.
2023-05-07 10:30:49 
2023-05-07 10:30:49 org.postgresql.util.PSQLException: FATAL: password authentication failed for user "postgres"
...

But I'm entirely sure that passed credentials are right.

At the same time, the docker container I'm trying to connect to says that

2023-05-07 10:30:51 2023-05-07 07:30:51.287 UTC [41] DETAIL:  Role "postgres" does not exist.
2023-05-07 10:30:51     Connection matched pg_hba.conf line 100: "host all all all scram-sha-256"

If I try to create user named 'postgres' postgresql console tells me that it already exists;

docker-compose.yml file

  postgres-order:
    container_name: postgres-order
    image: postgres
    environment:
      POSTGRES_DB: order_service
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: password
      PGDATA: /data/postgres
    volumes:
      - ./postgres-order:/data/postgres
    ports:
      - "5431:5431"
    command: -p 5431
    expose:
      - "5431"
    restart: always

  
  order-service:
    container_name: order-service
    image: registry.hub.docker.com/jirafus400/order-service:latest
    environment:
      - SPRING_PROFILES_ACTIVE=docker
      - SPRING_DATASOURCE_URL=jdbc:postgresql://postgres-order:5431/order_service
    depends_on:
      - postgres-order
      - broker
      - eureka-server
      - api-gateway

application-docker.properties file

spring.datasource.url=jdbc:postgresql://postgres-order:5431/order_service
spring.datasource.username=postgres
spring.datasource.password=password
spring.datasource.driver-class-name=org.postgresql.Driver
server.port=8080
eureka.client.serviceUrl.defaultZone=http://eureka:password@eureka-server:8761/eureka
spring.kafka.bootstrap-servers=broker:29092

Solved. The problem was that the volumes was created with a different postgres credentials. And after I change credentials they're not matched. Just removed volumes and it all worked.