test.md

description	title	hide_from_sitemap
Smoketest page	Testing page	true

Heading 1

Most pages don't actually have a H1 heading. The page title from the metadata is automatically inserted.

Heading 2

This is the highest heading included in the right-nav. To include more heading levels, set toc_min: 1 in the page-s front-matter. You can go all the way to 6, but if toc_min is geater than toc_max then no headings will show.

Heading 3

This is the lowest heading included in the right-nav, by default. To include more heading levels, set toc_max: 4 in the page's front-matter. You can go all the way to 6.

Heading 4

This heading is not included in the right-nav. To include it set toc_max: 4 in the page's front-matter.

Heading 5

This heading is not included in the right-nav. To include it set toc_max: 5 in the page's front-matter.

Heading 6

This is probably too many headings. Try to avoid it.

This heading is not included in the right-nav. To include it set toc_max: 6 in the page's front-matter.

Typography

Plain block of text.

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Inline text styles:

• bold
• italic
• bold italic
• strikethrough
• underline
• underline italic
• underline bold
• underline bold italic
• monospace text
• monospace bold

Links and images

Links

• a markdown link

• a markdown link that opens in a new window{: target="blank" class="" } (the class="_" trick prevents Atom from italicizing the whole rest of the file until it encouters another underscore.)

• an HTML link

• an HTML link that opens in a new window

• A link to a Github PR in docker/docker: {% include github-pr.md pr=28199 %}

• A link to a Github PR in docker/docker.github.io: {% include github-pr.md repo=docker.github.io pr=9999 %}

(you can also specify org=foo to use a Github organization other than Docker).

Images

• A small cute image:

• A small cute image that is a link. The extra newline here makes it not show inline:

  

• A big wide image:

• The same as above but using HTML:

Some Bootstrap image classes might be interesting. You can use them with Markdown or HTML images.

• An image using the Bootstrap "thumbnail" class: {: class="img-thumbnail" }

• The same one, but using HTML:

Lists

• Bullet list item 1
• Bullet list item 2

• Bullet list item 3

1. Numbered list item 1. Two spaces between the period and the first letter helps with alignment.

2. Numbered list item 2. Let's put a note in it.

   Note: We did it!

3. Numbered list item 3 with a code block in it. You need the blank line before the code block happens.

   $ docker run hello-world

4. Numbered list item 4 with a bullet list inside it and a numbered list inside that.

   • Sub-item 1
   • Sub-item 2

     1. Sub-sub-item 1

     2. Sub-sub-item-2 with a table inside it because we like to party! Indentation is super important.

        Header 1	Header 2
        Thing 1	Thing 2
        Thing 3	Thing 4

Tables

Some tables in markdown and html.

Permission level	Access
Bold or italic within a table cell. Next cell is empty on purpose.
	Previous cell is empty. A --flag in mono text.
Read	Pull
Read/Write	Pull, push
Admin	All of the above, plus update description, create and delete

The alignment of the cells in the source doesn't really matter. The ending pipe character is optional (unless the last cell is supposed to be empty). The header row and separator row are optional.

If you need block-level HTML within your table cells, such as multiple paragraphs, lists, sub-tables, etc, then you need to make a HTML table. This is also the case if you need to use rowspans or colspans. Try to avoid setting styles directly on your tables! If you set the width on a <td>, you only need to do it on the first one. If you have a <th>, set it there.

Note: If you need to have markdown in a HTML table, you need to capture the table and then filter it through markdownify. See tabs for an example. Here, I avoid that by using HTML throughout.

Left channel	Right channel
This is some test text. This is more text on a new line. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.	This is some more text about the right hand side. There is a link here to the Docker Experimental Features README on GitHub. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Go to the docs! It is dark here. You are likely to be eaten by a grue.	Go to the docs! It is dark here. You are likely to be eaten by a grue.

Mixing Markdown and HTML

You can use span-level HTML tags within Markdown.

You can use a <br /> tag to impose an extra newline like here:

You can use entities like   to keep a bunch of words together .

You can use block-level HTML tags too. This paragraph is centered.

Keep reading for more examples, such as creating tabbed content within the page or displaying content as "cards".

Jekyll / Liquid tricks

This paragraph is centered and colored green by setting CSS directly on the element. Even though you can do this and it's sometimes the right way to go, remember that if we re-skin the site, any inline styles will need to be dealt with manually! {: style="text-align:center; color: green" }

{% assign my-text="foo" %}

The Liquid assignment just before this line fills in the following token {{ my-text }}. This will be effective for the rest of this file unless the token is reset.

{% capture my-other-text %}foo{% endcapture %} Here is another way: {{ my-other-text }}

You can nest captures within each other to represent more complex logic with Liquid.

Liquid variable scope

• Things set in the top level of _config.yml are available as site variables, like {{ site.debug }}.
• Things set in the page's metadata, either via the defaults in _config.yml or per page, are available as page variables, like {{ page.title }}.
• In-line variables set via assign or capture are available for the remainder of the page after they are set.
• If you include a file, you can pass key-value pairs at the same time. These are available as include variables, like {{ include.toc_min }}.

Bootstrap and CSS tricks

Tabs

Here are some tabs:

• TAB 1 HEADER
• TAB 2 HEADER

TAB 1 CONTENT

TAB 2 CONTENT

You need to adjust the id and data-target values to match your use case.

If you have Markdown inside the content of the <div>, you need to capture it, then print it and run it through the markdownify Liquid filter. Here's a demo:

• TAB 1 HEADER
• TAB 2 HEADER

{% capture tab3-content %} #### A Markdown header

• list item 1
• list item 2 {% endcapture %} {{ tab3-content | markdownify }}

{% capture tab4-content %} #### Another Markdown header

• list item 3
• list item 4 {% endcapture %} {{ tab4-content | markdownify }}

Synchronizing multiple tab groups

Consider an example where you have something like one tab per language, and you have multiple tab sets like this on a page. You might want them to all toggle together. We have Javascript that loads on every page that lets you do this by setting the data-group attributes to be the same. Note that the data-target attributes still need to point to unique div IDs.

In this example, selecting Go or Python in one tab set will toggle the other tab set to match.

• Go
• Python

Go content here

Python content here

And some content between the two sets, just for fun...

• Go
• Python

Go content here

Python content here

Cards

In a Bootstrap row, your columns need to add up to 12. Here are three cards in a row, each of which takes up 1/3 (4/12) of the row. You need a couple <br />s to clear the row before.

This will take up 1/3 of the row unless the screen is small, then it will take up the whole row.

This will take up 1/3 of the row unless the screen is small, then it will take up the whole row.

This will take up 1/3 of the row unless the screen is small, then it will take up the whole row.

Columnar text

You can use the CSS column-count to flow your text into multiple columns. You need a couple <br />s to clear the row before.

This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div. This example uses a HTML div.

This example does it with Markdown. You can't have any blank lines or it will break the Markdown block up. This example does it with Markdown. You can't have any blank lines or it will break the Markdown block up. This example does it with Markdown. You can't have any blank lines or it will break the Markdown block up. This example does it with Markdown. You can't have any blank lines or it will break the Markdown block up. This example does it with Markdown. You can't have any blank lines or it will break the Markdown block up. This example does it with Markdown. You can't have any blank lines or it will break the Markdown block up. This example does it with Markdown. You can't have any blank lines or it will break the Markdown block up. This example does it with Markdown. You can't have any blank lines or it will break the Markdown block up. This example does it with Markdown. You can't have any blank lines or it will break the Markdown block up. {: style="column-count: 3 "}

Running in-page Javascript

If you need to run custom Javascript within a page, and it depends upon JQuery or Bootstrap, make sure the <script> tags are at the very end of the page, after all the content. Otherwise the script may try to run before JQuery and Bootstrap JS are loaded.

Note: In general, this is a bad idea.

Admonitions (notes)

Note: This is a note.

Info: This is an info.

Tip: This is a tip.

Warning: This is a warning.

Caution: This is a caution.

Note: One line of note text another line of note text

Note: This is a note with a list and a table in it.

• List item 1
• List item 2

Table column 1	Table column 2
Row 1 column 1	Row 2 column 2
Row 2 column 1	Row 2 column 2

And another sentence to top it all off.

Comments

You can use XML style comments, which show up in the HTML "view source", or Liquid ones, which don't. You'll need to view the source of this file to see both styles.

{% comment %}This one won't.{% endcomment %}

Code blocks

Rouge provides lots of different code block "hints". If you leave off the hint, it tries to guess and sometimes gets it wrong. These are just a few hints that we use often.

Raw, no highlighting

The raw markup is needed to keep Liquid from interperting the things with double braces as templating language.

none with raw
{% raw %}
$ some command with {{double braces}}
$ some other command
{% endraw %}

Raw, Bash

bash with raw
{% raw %}
$ some command with {{double braces}}
$ some other command
{% endraw %}

Bash

$ echo "deb https://packages.docker.com/1.12/apt/repo ubuntu-trusty main" | sudo tee /etc/apt/sources.list.d/docker.list

GO

incoming := map[string]interface{}{
    "asdf": 1,
    "qwer": []interface{}{},
    "zxcv": []interface{}{
        map[string]interface{}{},
        true,
        int(1e9),
        "tyui",
    },
}

Python

return html.format(name=os.getenv('NAME', "world"), hostname=socket.gethostname(), visits=visits)

Ruby

docker_service 'default' do
  action [:create, :start]
end

JSON

Sometimes this doesn't work right and you have to use none.

"server": {
  "http_addr": ":4443",
  "tls_key_file": "./fixtures/notary-server.key",
  "tls_cert_file": "./fixtures/notary-server.crt"
}

HTML

<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
</head>
</html>

Markdown

[![Deploy to Docker Cloud](https://files.cloud.docker.com/images/deploy-to-dockercloud.svg)](https://cloud.docker.com/stack/deploy/?repo=<repo_url>)

ini

[supervisord]
nodaemon=true

[program:sshd]
command=/usr/sbin/sshd -D

Dockerfile

Yes, we have our own highlighting in Rouge!

#
# example Dockerfile for https://docs.docker.com/examples/postgresql_service/
#

FROM ubuntu

RUN apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8

RUN echo "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main" > /etc/apt/sources.list.d/pgdg.list

RUN apt-get update && apt-get install -y python-software-properties software-properties-common postgresql-9.3 postgresql-client-9.3 postgresql-contrib-9.3

# Note: The official Debian and Ubuntu images automatically ``apt-get clean``
# after each ``apt-get``

USER postgres

RUN    /etc/init.d/postgresql start &&\
    psql --command "CREATE USER docker WITH SUPERUSER PASSWORD 'docker';" &&\
    createdb -O docker docker

RUN echo "host all  all    0.0.0.0/0  md5" >> /etc/postgresql/9.3/main/pg_hba.conf

RUN echo "listen_addresses='*'" >> /etc/postgresql/9.3/main/postgresql.conf

EXPOSE 5432

VOLUME  ["/etc/postgresql", "/var/log/postgresql", "/var/lib/postgresql"]

CMD ["/usr/lib/postgresql/9.3/bin/postgres", "-D", "/var/lib/postgresql/9.3/main", "-c", "config_file=/etc/postgresql/9.3/main/postgresql.conf"]

YAML

The yaml hint doesn't play nicely with Atom so we sometimes have to use none.

authorizedkeys:
  image: dockercloud/authorizedkeys
  deployment_strategy: every_node
  autodestroy: always
  environment:
    - AUTHORIZED_KEYS=ssh-rsa AAAAB3Nsomelongsshkeystringhereu9UzQbVKy9o00NqXa5jkmZ9Yd0BJBjFmb3WwUR8sJWZVTPFL
  volumes:
    /root:/user:rw