Rails server is still running in a new opened docker container

Question

I want to deploy my rails project using Docker. So I use Docker-Compose. But I get one weird error message. When run docker-compose up(this contains db-container with postgresql

Answer 1

For ones, who have problem when there is no tmp/pids/server.pid actually exists:

(Docker version 1.11.2, build b9f10c9)

1. Solution, which worked for me is to add exact command to docker-compose.yml, for example:

   command:
      rails s -b0
   

   Having this command, which in fact may simply duplicate Dockerfile's CMD - issue with stale .pid do not appear.

2. Other option, when you need to use Dockerfile's CMD, is to run with option --build to rebuild image:

   docker-compose up --build
   

   Though it takes time, so first solution is more convenient