ruby on rails - Docker Containers can not be stopped or removed - permission denied Error

Question

Issue: Can not stop docker containers, whenever I try to stop containers I get the following Error message,

ERROR: for yattyadocker_web_1  cannot stop container: 1f04148910c5bac38983e6beb3f6da4c8be3f46ceeccdc8d7de0da9d2d76edd8: Cannot kill container 1f04148910c5bac38983e6beb3f6da4c8be3f46ceeccdc8d7de0da9d2d76edd8: rpc error: code = PermissionDenied desc = permission denied

OS Version/build: Ubuntu 16.04 | Docker Version 17.09.0-ce, build afdb6d4 | Docker Compose version 1.17.1, build 6d101fb

Steps to reproduce:

• Created a rails project with Dockerfile and docker-compose.yml. docker-compose.yml is of version 3.
• Image is built successfully with either docker build -t <project name> . or docker-compose up --build
• Containers boots up and runs successfully.
• Try to stop docker compose with docker-compose down.

What I tried::

• I have to run sudo service docker restart and then the containers can be removed.
• Uninstalled docker, removed docker directory and then re installed everything. Still facing same issue.

Note: This configuration was working correctly earlier, but somehow file permissions might have changed and I am seeing this error. I have to run sudo service docker restart and then the containers can be removed. But this is highly inconvenient and I don't know how to troubleshoot this.

Reference Files:

# docker-compose.yml
version: '3'
volumes:
  db-data:
    driver: local
  redis-data:
    driver: local  
services:
  db:
    image: postgres:9.4.1
    volumes:
      - db-data:/var/lib/postgresql/data
    ports:
      - "5432:5432"
    env_file: local_envs.env
  web:
    image: yattya_docker:latest
    command: bundle exec puma -C config/puma.rb
    tty: true
    stdin_open: true
    ports:
      - "3000:3000"
    links:
      - db
      - redis
      - memcached
    depends_on:
      - db
      - redis
      - memcached
    env_file: local_envs.env
  redis:
    image: redis:3.2.4-alpine
    ports:
      # We'll bind our host's port 6379 to redis's port 6379, so we can use
      # Redis Desktop Manager (or other tools) with it:
      - 6379:6379
    volumes:
      # We'll mount the 'redis-data' volume into the location redis stores it's data:
      - redis-data:/var/lib/redis
    command: redis-server --appendonly yes
  memcached:
    image: memcached:1.5-alpine
    ports:
      - "11211:11211"
  clock:
    image: yattya_docker:latest
    command: bundle exec clockwork lib/clock.rb
    links:
      - db
    depends_on:
      - db
    env_file: local_envs.env
  worker:
    image: yattya_docker:latest
    command: bundle exec rake jobs:work
    links: 
      - db
    depends_on: 
      - db
    env_file: local_envs.env

And Dockerfile:

# Dockerfile
FROM ruby:2.4.1

RUN apt-get update && apt-get install -y nodejs --no-install-recommends && rm -rf /var/lib/apt/lists/*

ENV APP_HOME /app
RUN mkdir -p $APP_HOME
WORKDIR $APP_HOME

ADD Gemfile* $APP_HOME/
RUN bundle install

ADD . $APP_HOME

RUN mkdir -p ${APP_HOME}/log
RUN cat /dev/null > "$APP_HOME/log/development.log"

RUN mkdir -p ${APP_HOME}/tmp/cache 
    && mkdir -p ${APP_HOME}/tmp/pids 
    && mkdir -p ${APP_HOME}/tmp/sockets

EXPOSE 3000

Answer 1

I installed Docker from the snap package and after a while I decided to move to apt repository installation.

I was facing the same problem and using sudo aa-remove-unknown worked for me.

So no reinstallation of Apparmor was needed.