cookiecutter-django/docs/developing-locally-docker.rst
2015-09-18 14:26:29 -07:00

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Getting Up and Running with Docker
==================================
.. index:: Docker
The steps below will get you up and running with a local development environment.
Prerequisites
--------------
* docker
* docker-machine
* docker-compose
* virtualbox
If you don't already have these installed, you can get them at:
* https://github.com/docker/toolbox/releases
* https://www.virtualbox.org/wiki/Downloads
Go to the Root of your Project
------------------------------
All of these commands assume you are in the root of your generated project.
Create the Machine
-------------------
::
$ docker-machine create --driver virtualbox dev1
**Note:** If you want to have more than one docker development environment, then
name them accordingly. Instead of 'dev1' you might have 'dev2', 'myproject',
'djangopackages', et al.
Make the new machine the active unit
-------------------------------------
This tells our computer that all future commands are specifically for the just
created machine. Using the ``eval`` command we can switch machines as needed.
::
$ eval "$(docker-machine env dev1)"
Get the IP Address
--------------------
Acquiring the IP Address is good for two reasons:
1. Confirms that the machine is up and running.
2. Tells us the IP address where our Django project is being served.
::
$ docker-machine ip dev1
123.456.789.012
Build the Stack
---------------
This can take a while, especially the first time you run this particular command
on your development system.
::
$ docker-compose build
Boot the System
------------------------------
This brings up both Django and PostgreSQL. The first time it is run it might
take a while to get started, but subsequent runs will occur quickly.
::
$ docker-compose -f dev.yml up
If you want to run the entire system in production mode, then run:
::
$ docker-compose up
If you want to run the stack in detached mode (in the background), use the ``-d`` argument::
::
$ docker-compose up -d
Running bash commands (i.e. management commands)
----------------------------------------------------
This is done using the ``docker-compose run`` command. In the following examples
we specify the ``django`` container as the location to run our management commands.
Example:
$ docker-compose run django python manage.py migrate
$ docker-compose run django python manage.py createsuperuser
Deprecated
==========
**Note:** This segment of documentation is being kept in this location as part of our documentation transition process.
The steps below will get you up and running with a local development environment. We assume you have the following installed:
* docker
* docker-compose
Open a terminal at the project root and run the following for local development::
$ docker-compose -f dev.yml up
You can also set the environment variable ``COMPOSE_FILE`` pointing to ``dev.yml`` like this::
$ export COMPOSE_FILE=dev.yml
And then run::
$ docker-compose up
To migrate your app and to create a superuser, run::
$ docker-compose run django python manage.py migrate
$ docker-compose run django python manage.py createsuperuser
If you are using `boot2docker` to develop on OS X or Windows, you need to create a `/data` partition inside your boot2docker
vm to make all changes persistent. If you don't do that your `/data` directory will get wiped out on every reboot.
To create a persistent folder, log into the `boot2docker` vm by running::
$ bootdocker ssh
And then::
$ sudo su
$ echo 'ln -sfn /mnt/sda1/data /data' >> /var/lib/boot2docker/bootlocal.sh
In case you are wondering why you can't use a host volume to keep the files on your mac: As of `boot2docker` 1.7 you'll
run into permission problems with mounted host volumes if the container creates his own user and chown's the directories
on the volume. Postgres is doing that, so we need this quick fix to ensure that all development data persists.