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docs: add standard 'check your docker install' paragraph to the 'hello world' examples.

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Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
This commit is contained in:
Solomon Hykes 2014-01-21 02:58:04 +00:00
parent cf5504eed5
commit 76eee50a67
1 changed files with 11 additions and 15 deletions
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26
docs/sources/examples/hello_world.rst
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@ -9,25 +9,23 @@ Hello World
.. _running_examples:
Running the Examples
====================
Check your docker install
-------------------------
All the examples assume your machine is running the ``docker`` daemon. To
run the ``docker`` daemon in the background, simply type:
This guide assumes you have a working installation of Docker. To check
your docker install, run the following command:
.. code-block:: bash
sudo docker -d &
# Check that you have a working install
docker info
Now you can run Docker in client mode: by default all commands will be
forwarded to the ``docker`` daemon via a protected Unix socket, so you
must run as the ``root`` or via the ``sudo`` command.
If you get ``docker: command not found`` or something like
``/var/lib/docker/repositories: permission denied`` you may have an incomplete
docker installation or insufficient privileges to access docker on your machine.
.. code-block:: bash
Please refer to :ref:`installation_list` for installation instructions.
sudo docker help
----
.. _hello_world:
@ -88,9 +86,7 @@ Hello World Daemon
And now for the most boring daemon ever written!
This example assumes you have Docker installed and the Ubuntu
image already imported with ``docker pull ubuntu``. We will use the Ubuntu
image to run a simple hello world daemon that will just print hello
We will use the Ubuntu image to run a simple hello world daemon that will just print hello
world to standard out every second. It will continue to do this until
we stop it.