docker-compose - 无法附加到容器

Question

Using below docker-compose.yml file if I run " docker-compose up " or " docker-compose up -d " command then I see both containers status as exited however when I run docker restart <postgres-containerId> then its up and running but when I try to run docker restart <java8-containerId> then its restarting and again exiting.

Could you please suggest what parameter I need to specify to make these containers up and running after docker-compose up command and how do I attach to java container I tried with docker attach <java8-containerId> command but was not able to attach ?

docker-compose.yml file -

postgres:
  image: postgres:9.4
  ports:
   - "5430:5432"

javaapp:
  image:java8:latest
  volumes:
   - /pgm:/pgm
  working_dir: /pgm
  links:
   - postgres
  command: /bin/bash

docker-compose ps results -
       Name                     Command               State    Ports 
--------------------------------------------------------------------
compose_javaapp_1    /bin/bash                        Exit 0         
compose_postgres_1   /docker-entrypoint.sh postgres   Exit 0     

Answer 1

To see available containers:

docker ps -a

To open container shell:

docker exec -it <container-name> /bin/bash