SHELL

docker redis default username password

$ docker run --name some-redis -d redis redis-server --requirepass foobared

# verify it worked with
$ docker run -it --link some-redis:redis --rm redis redis-cli -h redis -p 6379
redis:6379> AUTH test
(error) ERR invalid password
redis:6379> AUTH foobared
OK
redis:6379> 


This could be abstracted to an environment variable trivially via something like:
$ docker run --name some-redis -d -e REDIS_PASSWORD=foobared redis sh -c 'exec redis-server --requirepass "$REDIS_PASSWORD"'

docker redis set password

redis:
    restart: always
    container_name: app-redis
    build:
      context: ./docker/images/redis
      dockerfile: Dockerfile
    ports:
      - "6379:6379"
    volumes:
      - ./docker/images/redis/data:/data
    command: redis-server --requirepass ${REDIS_PASSWORD:-123456}

docker redis default username password

$ docker run --name some-redis -d redis redis-server --requirepass foobared

# verify it worked with
$ docker run -it --link some-redis:redis --rm redis redis-cli -h redis -p 6379
redis:6379> AUTH test
(error) ERR invalid password
redis:6379> AUTH foobared
OK
redis:6379> 


This could be abstracted to an environment variable trivially via something like:
$ docker run --name some-redis -d -e REDIS_PASSWORD=foobared redis sh -c 'exec redis-server --requirepass "$REDIS_PASSWORD"'

docker redis set password

redis:
    restart: always
    container_name: app-redis
    build:
      context: ./docker/images/redis
      dockerfile: Dockerfile
    ports:
      - "6379:6379"
    volumes:
      - ./docker/images/redis/data:/data
    command: redis-server --requirepass ${REDIS_PASSWORD:-123456}