mirror of https://github.com/docker/docs.git
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580 lines
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<a data-link href="/linux/step_three/" class=""> Find & run the whalesay image </a>
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<h1 id="learn-about-images-containers">Learn about images & containers</h1>
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<p>As the last step in your installation, you ran the <code>docker run hello-world</code> command. With this one command, you completed the core tasks to using Docker. The command you ran had three parts.</p>
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<p>
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<figure >
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<img src="/tutimg/container_explainer.png" />
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</figure>
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<p>A <em>container</em> is a stripped-to-basics version of a Linux operating system. An <em>image</em> is software you load into a container. When you ran the command, the Docker software:</p>
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<ul>
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<li>checked to see if you had the <code>hello-world</code> software image</li>
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<li>downloaded the image from the Docker Hub (more about the hub later)</li>
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<li>loaded the image into the container and “ran” it</li>
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</ul>
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<p>Depending on how it was built, an image might run a simple, single command and then exit. This is what <code>Hello-World</code> did.</p>
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<p>A Docker image, though, is capable of much more. An image can start software as complex as a database, wait for you (or someone else) to add data, store the data for later use, and then wait for the next person.</p>
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<p>Who built the <code>hello-world</code> software image though? In this case, Docker did but anyone can. Docker lets people (or companies) create and share software through Docker images. Using Docker, you don’t have to worry about whether your computer can run the software in a Docker image — a Docker container <em>can always run it</em>.</p>
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<h2 id="where-to-go-next">Where to go next</h2>
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<p>See, that was quick wasn’t it? Now, you are ready to do some really fun stuff with Docker. Go on to the next part <a href="/linux/step_three">to find and run the whalesay image</a>.</p>
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Jul 8, 2015 at 6:45pm (PST)
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BUILD_DATA
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function closeSiblingAccordions($accordion) {
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|
var $accordionGroup = $accordion.closest(opts.groupElement);
|
|
|
|
var $siblings = $accordion.siblings('[data-accordion]').filter('.open'),
|
|
$siblingsChildren = $siblings.find('[data-accordion]').filter('.open');
|
|
|
|
var $otherAccordions = $siblings.add($siblingsChildren);
|
|
|
|
$otherAccordions.each(function() {
|
|
var $accordion = $(this),
|
|
$content = $accordion.find(opts.contentElement);
|
|
|
|
closeAccordion($accordion, $content);
|
|
});
|
|
|
|
$otherAccordions.removeClass('open');
|
|
}
|
|
|
|
function toggleAccordion() {
|
|
var isAccordionGroup = (opts.singleOpen) ? $accordion.parents(opts.groupElement).length > 0 : false;
|
|
|
|
calculateHeight($content);
|
|
|
|
if(isAccordionGroup) {
|
|
closeSiblingAccordions($accordion);
|
|
}
|
|
|
|
if($accordion.hasClass('open')) {
|
|
closeAccordion($accordion, $content);
|
|
} else {
|
|
openAccordion($accordion, $content);
|
|
}
|
|
}
|
|
|
|
function addEventListeners() {
|
|
$controls.on('click', toggleAccordion);
|
|
|
|
$controls.on('accordion.toggle', function() {
|
|
if(opts.singleOpen && $controls.length > 1) {
|
|
return false;
|
|
}
|
|
|
|
toggleAccordion();
|
|
});
|
|
|
|
$(window).on('resize', debounce(function() {
|
|
refreshHeight($accordion);
|
|
}));
|
|
}
|
|
|
|
function setup() {
|
|
$content.each(function() {
|
|
var $curr = $(this);
|
|
|
|
if($curr.css('max-height') != 0) {
|
|
if(!$curr.closest('[data-accordion]').hasClass('open')) {
|
|
$curr.css({ 'max-height': 0, 'overflow': 'hidden' });
|
|
} else {
|
|
toggleTransition($curr);
|
|
calculateHeight($curr);
|
|
|
|
$curr.css('max-height', $curr.data('oHeight'));
|
|
}
|
|
}
|
|
});
|
|
|
|
|
|
if(!$accordion.attr('data-accordion')) {
|
|
$accordion.attr('data-accordion', '');
|
|
$accordion.find(opts.controlElement).attr('data-control', '');
|
|
$accordion.find(opts.contentElement).attr('data-content', '');
|
|
}
|
|
}
|
|
|
|
setup();
|
|
addEventListeners();
|
|
};
|
|
|
|
$.fn[pluginName] = function ( options ) {
|
|
return this.each(function () {
|
|
if (!$.data(this, 'plugin_' + pluginName)) {
|
|
$.data(this, 'plugin_' + pluginName,
|
|
new Accordion( this, options ));
|
|
}
|
|
});
|
|
}
|
|
|
|
})( jQuery, window, document );
|
|
|
|
$(document).ready(function() {
|
|
$('#multiple [data-accordion]').accordion({
|
|
singleOpen: false
|
|
});
|
|
});
|
|
|
|
</script>
|
|
|
|
|
|
<script src="/dist/assets/js/bootstrap-3.0.3.min.js"></script>
|
|
<script src="/dist/assets/js/archive.js"></script>
|
|
<script type="text/javascript">
|
|
!function(){var analytics=window.analytics=window.analytics||[];if(!analytics.initialize)if(analytics.invoked)window.console&&console.error&&console.error("Segment snippet included twice.");else{analytics.invoked=!0;analytics.methods=["trackSubmit","trackClick","trackLink","trackForm","pageview","identify","reset","group","track","ready","alias","debug","page","once","off","on"];analytics.factory=function(t){return function(){var e=Array.prototype.slice.call(arguments);e.unshift(t);analytics.push(e);return analytics}};for(var t=0;t<analytics.methods.length;t++){var e=analytics.methods[t];analytics[e]=analytics.factory(e)}analytics.load=function(t){var e=document.createElement("script");e.type="text/javascript";e.async=!0;e.src=("https:"===document.location.protocol?"https://":"http://")+"cdn.segment.com/analytics.js/v1/"+t+"/analytics.min.js";var n=document.getElementsByTagName("script")[0];n.parentNode.insertBefore(e,n)};analytics.SNIPPET_VERSION="4.0.0";
|
|
analytics.load("IWj9D0UpZHZdZUZX9jl98PcpBFWBnBMy");
|
|
analytics.page();
|
|
}}();
|
|
</script>
|
|
|