psql: FATAL: password authentication failed for user "postgres"

[StephanMeijer]

$ sudo docker run --name postgresql -itd --restart always   --env 'PG_PASSWORD=postgres'   --env 'PG_TRUST_LOCALNET=true'   --publish 5432:5432   --volume /srv/docker/postgresql:/var/lib/postgresql   sameersbn/postgresql:9.6-2
59edeb353dec8c503a7f8d86396decfcdb31b98a3b463c3e9c990083fb4dc59e

$ psql -Upostgres -hlocalhost
Password for user postgres: 
psql: FATAL:  password authentication failed for user "postgres"

[loaialsharee]

If none of the above helped and you were sure that the port is free, you might consider removing all of your volumes, and turn on your containers again. I faced the same issue and removing the volumes brought me back on track!

1. docker-compose down -v, where -v will remove all of your volumes
2. docker-compose up --build

[RobQuistNL]

Also make sure you use the correct format;

services:
  postgresql:
    image: postgres:14-alpine
    volumes:
      - postgresql-storage:/var/lib/postgresql/data
    environment:
      - POSTGRES_PASSWORD=devpassword
      - POSTGRES_USER=devuser
      - POSTGRES_DB=devdb
      - POSTGRES_HOST_AUTH_METHOD=trust

postgresql://devuser:devpassword@postgresql:5432/devdb