title: docker-compose error on the Django's welcome page
body: <p>When I visit the address <a href="http://192.168.99.100:8000/" rel="nofollow noreferrer">http://192.168.99.100:8000/</a> I can't see the django's welcome page in my browser.</p>
  
  <pre><code>gmondesi@MRT-3-011 MINGW64 ~/Documents/GitHub/docker-django-tutorial (master)
  $ docker-machine ls
  NAME      ACTIVE   DRIVER       STATE     URL                         SWARM   DO
  CKER        ERRORS
  default   *        virtualbox   Running   tcp://192.168.99.100:2376           v1
  7.04.0-ce
  
  gmondesi@MRT-3-011 MINGW64 ~/Documents/GitHub/docker-django-tutorial (master)
  $ docker-machine ip
  192.168.99.100
  
  gmondesi@MRT-3-011 MINGW64 ~/Documents/GitHub/docker-django-tutorial (master)
  $ docker-compose run web
  time="2017-04-09T18:03:29-04:00" level=info msg="Unable to use system certificat
  e pool: crypto/x509: system root pool is not available on Windows"
  Performing system checks...
  
  System check identified no issues (0 silenced).
  
  You have 13 unapplied migration(s). Your project may not work properly until you
   apply the migrations for app(s): admin, auth, contenttypes, sessions.
  Run 'python manage.py migrate' to apply them.
  
  April 09, 2017 - 22:03:31
  Django version 1.11, using settings 'composeexample.settings'
  Starting development server at http://0.0.0.0:8000/
  Quit the server with CONTROL-C.
  </code></pre>
  
  <p>is there another way (or localhost link) that I can access my django's welcome page?</p>
  
  <p><a href="https://i.stack.imgur.com/kAdyr.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kAdyr.jpg" alt="enter image description here"></a></p>
  
  <p>Dockerfile</p>
  
  <pre><code> FROM python:2.7
   ENV PYTHONUNBUFFERED 1
   RUN mkdir /code
   WORKDIR /code
   ADD requirements.txt /code/
   RUN pip install -r requirements.txt
   ADD . /code/
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/9j7Yj.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9j7Yj.jpg" alt="enter image description here"></a></p>
  
  <p>docker-compose.yml</p>
  
  <pre><code> version: '2'
   services:
     db:
       image: postgres
     web:
       build: .
       command: python manage.py runserver 0.0.0.0:8000
       volumes:
         - .:/code
       ports:
         - "8000:8000"
       depends_on:
         - db
  </code></pre>
  
  <p>docker compose up</p>
  
  <pre><code>gmondesi@MRT-3-011 MINGW64 ~/Documents/GitHub/docker-django-tutorial (master)
  $ docker-compose up
  dockerdjangotutorial_db_1 is up-to-date
  Creating dockerdjangotutorial_web_1
  Attaching to dockerdjangotutorial_db_1, dockerdjangotutorial_web_1
  db_1   | The files belonging to this database system will be owned by user "post
  gres".
  db_1   | This user must also own the server process.
  db_1   |
  db_1   | The database cluster will be initialized with locale "en_US.utf8".
  db_1   | The default database encoding has accordingly been set to "UTF8".
  db_1   | The default text search configuration will be set to "english".
  db_1   |
  db_1   | Data page checksums are disabled.
  db_1   |
  db_1   | fixing permissions on existing directory /var/lib/postgresql/data ... o
  k
  db_1   | creating subdirectories ... ok
  db_1   | selecting default max_connections ... 100
  db_1   | selecting default shared_buffers ... 128MB
  db_1   | selecting dynamic shared memory implementation ... posix
  db_1   | creating configuration files ... ok
  db_1   | running bootstrap script ... ok
  db_1   | performing post-bootstrap initialization ... ok
  db_1   |
  db_1   | WARNING: enabling "trust" authentication for local connections
  db_1   | You can change this by editing pg_hba.conf or using the option -A, or
  db_1   | --auth-local and --auth-host, the next time you run initdb.
  db_1   | syncing data to disk ... ok
  db_1   |
  db_1   | Success. You can now start the database server using:
  db_1   |
  db_1   |     pg_ctl -D /var/lib/postgresql/data -l logfile start
  db_1   |
  db_1   | ****************************************************
  db_1   | WARNING: No password has been set for the database.
  db_1   |          This will allow anyone with access to the
  db_1   |          Postgres port to access your database. In
  db_1   |          Docker's default configuration, this is
  db_1   |          effectively any other container on the same
  db_1   |          system.
  db_1   |
  db_1   |          Use "-e POSTGRES_PASSWORD=password" to set
  db_1   |          it in "docker run".
  db_1   | ****************************************************
  db_1   | waiting for server to start....LOG:  could not bind IPv6 socket: Cannot
   assign requested address
  db_1   | HINT:  Is another postmaster already running on port 5432? If not, wait
   a few seconds and retry.
  db_1   | LOG:  database system was shut down at 2017-04-09 21:55:03 UTC
  db_1   | LOG:  MultiXact member wraparound protections are now enabled
  db_1   | LOG:  database system is ready to accept connections
  db_1   | LOG:  autovacuum launcher started
  db_1   |  done
  db_1   | server started
  db_1   | ALTER ROLE
  db_1   |
  db_1   |
  db_1   | /usr/local/bin/docker-entrypoint.sh: ignoring /docker-entrypoint-initdb
  .d/*
  db_1   |
  db_1   | LOG:  received fast shutdown request
  db_1   | LOG:  aborting any active transactions
  db_1   | LOG:  autovacuum launcher shutting down
  db_1   | LOG:  shutting down
  db_1   | waiting for server to shut down....LOG:  database system is shut down
  db_1   |  done
  db_1   | server stopped
  db_1   |
  db_1   | PostgreSQL init process complete; ready for start up.
  db_1   |
  db_1   | LOG:  database system was shut down at 2017-04-09 21:55:04 UTC
  db_1   | LOG:  MultiXact member wraparound protections are now enabled
  db_1   | LOG:  database system is ready to accept connections
  db_1   | LOG:  autovacuum launcher started
  web_1  | Performing system checks...
  web_1  |
  web_1  | System check identified no issues (0 silenced).
  </code></pre>
  
  <p>I just open the Kitematic software
  <a href="https://i.stack.imgur.com/L3kP8.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/L3kP8.jpg" alt="enter image description here"></a></p>
  
  <pre><code>gmondesi@MRT-3-011 MINGW64 ~/Documents/GitHub/docker-django-tutorial (master)
  $ docker --version
  time="2017-04-09T20:00:54-04:00" level=info msg="Unable to use system certificat
  e pool: crypto/x509: system root pool is not available on Windows"
  Docker version 17.03.1-ce, build c6d412e
  
  gmondesi@MRT-3-011 MINGW64 ~/Documents/GitHub/docker-django-tutorial (master)
  $ docker-compose --version
  docker-compose version 1.11.1, build 7afaa436
  
  gmondesi@MRT-3-011 MINGW64 ~/Documents/GitHub/docker-django-tutorial (master)
  $ docker-machine --version
  docker-machine.exe version 0.10.0, build 76ed2a6
  </code></pre>
  
  <p>running of docker-compose up again</p>
  
  <pre><code>gmondesi@MRT-3-011 MINGW64 ~/Documents/GitHub/docker-django-tutorial (master)
  $ docker-compose up
  Starting dockerdjangotutorial_db_1
  Starting dockerdjangotutorial_web_1
  Attaching to dockerdjangotutorial_db_1, dockerdjangotutorial_web_1
  db_1   | LOG:  database system was interrupted; last known up at 2017-04-09 22:0
  0:10 UTC
  db_1   | LOG:  database system was not properly shut down; automatic recovery in
   progress
  db_1   | LOG:  invalid record length at 0/150F2C0: wanted 24, got 0
  db_1   | LOG:  redo is not required
  db_1   | LOG:  MultiXact member wraparound protections are now enabled
  db_1   | LOG:  database system is ready to accept connections
  web_1  | Performing system checks...
  web_1  |
  web_1  | System check identified no issues (0 silenced).
  web_1  |
  web_1  | You have 13 unapplied migration(s). Your project may not work properly
  until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
  web_1  | Run 'python manage.py migrate' to apply them.
  web_1  | April 09, 2017 - 23:58:45
  web_1  | Django version 1.11, using settings 'composeexample.settings'
  web_1  | Starting development server at http://0.0.0.0:8000/
  web_1  | Quit the server with CONTROL-C.
  web_1  | Invalid HTTP_HOST header: '192.168.99.100:8000'. You may need to add u'
  192.168.99.100' to ALLOWED_HOSTS.
  web_1  | [10/Apr/2017 00:00:03] "GET / HTTP/1.1" 400 57374
  web_1  | Invalid HTTP_HOST header: '192.168.99.100:8000'. You may need to add u'
  192.168.99.100' to ALLOWED_HOSTS.
  web_1  | [10/Apr/2017 00:00:24] "GET / HTTP/1.1" 400 57486
  web_1  | Invalid HTTP_HOST header: '192.168.99.100:8000'. You may need to add u'
  192.168.99.100' to ALLOWED_HOSTS.
  web_1  | [10/Apr/2017 00:00:25] "GET /favicon.ico HTTP/1.1" 400 57409
  web_1  | Invalid HTTP_HOST header: '192.168.99.100:8000'. You may need to add u'
  192.168.99.100' to ALLOWED_HOSTS.
  web_1  | [10/Apr/2017 00:01:51] "GET / HTTP/1.1" 400 57486
  web_1  | Invalid HTTP_HOST header: '192.168.99.100:8000'. You may need to add u'
  192.168.99.100' to ALLOWED_HOSTS.
  web_1  | [10/Apr/2017 00:01:51] "GET /favicon.ico HTTP/1.1" 400 57670
  web_1  | Invalid HTTP_HOST header: '192.168.99.100:8000'. You may need to add u'
  192.168.99.100' to ALLOWED_HOSTS.
  web_1  | [10/Apr/2017 00:02:29] "GET / HTTP/1.1" 400 57159
  web_1  | Invalid HTTP_HOST header: '192.168.99.100:8000'. You may need to add u'
  192.168.99.100' to ALLOWED_HOSTS.
  web_1  | [10/Apr/2017 00:02:30] "GET /favicon.ico HTTP/1.1" 400 57280
  web_1  | Invalid HTTP_HOST header: '192.168.99.100:8000'. You may need to add u'
  192.168.99.100' to ALLOWED_HOSTS.
  web_1  | [10/Apr/2017 00:02:30] "GET /favicon.ico HTTP/1.1" 400 57280
  web_1  | Invalid HTTP_HOST header: '192.168.99.100:8000'. You may need to add u'
  192.168.99.100' to ALLOWED_HOSTS.
  web_1  | [10/Apr/2017 00:02:37] "GET / HTTP/1.1" 400 57374
  web_1  | Performing system checks...
  web_1  |
  web_1  | System check identified no issues (0 silenced).
  web_1  |
  web_1  | You have 13 unapplied migration(s). Your project may not work properly
  until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
  web_1  | Run 'python manage.py migrate' to apply them.
  web_1  | April 10, 2017 - 00:03:08
  web_1  | Django version 1.11, using settings 'composeexample.settings'
  web_1  | Starting development server at http://0.0.0.0:8000/
  web_1  | Quit the server with CONTROL-C.
  web_1  | Invalid HTTP_HOST header: '192.168.99.100:8000'. You may need to add u'
  192.168.99.100' to ALLOWED_HOSTS.
  web_1  | [10/Apr/2017 00:03:10] "GET / HTTP/1.1" 400 57292
  web_1  | Performing system checks...
  web_1  |
  web_1  | System check identified no issues (0 silenced).
  web_1  |
  web_1  | You have 13 unapplied migration(s). Your project may not work properly
  until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
  web_1  | Run 'python manage.py migrate' to apply them.
  web_1  | April 10, 2017 - 00:03:17
  web_1  | Django version 1.11, using settings 'composeexample.settings'
  web_1  | Starting development server at http://0.0.0.0:8000/
  web_1  | Quit the server with CONTROL-C.
  Gracefully stopping... (press Ctrl+C again to force)
  Stopping dockerdjangotutorial_web_1 ... done
  Stopping dockerdjangotutorial_db_1 ... done
  </code></pre>