109 lines
6.8 KiB
HTML
109 lines
6.8 KiB
HTML
{%- if page.title == nil -%}
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{%- comment -%}
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# This is a very hacky way to extract the page title from pages that do not have
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# front-matter yaml, but have a H1 header. We need to take (id-) attributes into
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# account, so some hacking is needed. Taking the following example:
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# <h1 id="docker-run-reference">Docker run reference</h1>
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#
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# a. split on '<h1', which gives us ['content before', '<h1 id="docker-run-reference">Docker run reference</h1>']
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# b. split the last element on '</h1', which gives us ['<h1 id="docker-run-reference">Docker run reference', '</h1', '>']
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# c. split the first element on '>', which gives us ['<h1 id="docker-run-reference"', '>', 'Docker run reference']
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{%- endcomment -%}
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{%- assign a = content | split: '<h1' | last -%}
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{%- assign b = a | split: '</h1' | first -%}
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{%- assign c = b | split: '>' | last -%}
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{%- assign page_title = c | strip_html | strip | truncatewords: 10 | escape_once -%}
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{%- endif -%}
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{%- if page.description == nil and page.datafile != nil and page.datafile != '' -%}
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{%- assign yaml_data = site.data[page.datafolder][page.datafile] -%}
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{%- if yaml_data.long and yaml_data.long != '' -%}
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{%- assign page_description = page.title | append: ': ' | append: yaml_data.long | strip_html | strip | truncatewords: 30 -%}
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{%- elsif yaml_data.short and yaml_data.short != '' -%}
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{%- assign page_description = page.title | append: ': ' | append: yaml_data.short | strip_html | strip | truncatewords: 30 -%}
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{%- else -%}
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{%- assign page_description = content | strip_html | strip | truncatewords: 30 -%}
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{%- endif -%}
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{%- endif -%}
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{%- assign domain_name = 'https://docs.docker.com' -%}
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{%- if jekyll.environment == 'development' -%}
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{%- assign domain_name = 'https://localhost:4000' -%}
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{%- endif -%}
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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{%- if page.sitemap == false or site.GH_ENV == "gh_pages" %}
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<meta name="robots" content="noindex"/>
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{%- endif %}
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{%- if jekyll.environment == 'production' and site.google_analytics != '' -%}{%- include analytics/google_analytics.html GOOGLE_ID=site.google_analytics -%}{%- endif -%}
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<title>{{ page.title | default: page_title }} | Docker Documentation</title>
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<meta name="description" content="{{ page.description | default: page_description | escape}}" />
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<meta name="keywords" content="{{ page.keywords | default: 'docker, docker open source, docker platform, distributed applications, microservices, containers, docker containers, docker software, docker virtualization' }}">
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<link rel="canonical" href="{{ domain_name }}{{ page.url }}" />
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<!-- favicon -->
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<link rel="icon" type="image/x-icon" href="/favicons/docs@2x.ico" sizes="129x128">
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<link rel="apple-touch-icon" type="image/x-icon" href="/favicons/docs@2x.ico" sizes="129x128">
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<meta name="msapplication-TileImage" content="/favicons/docs@2x.ico">
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<meta property="og:image" content="/favicons/docs@2x.ico"/>
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<meta name="theme-color" content="#2496ed" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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{%- comment -%}
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We put these scripts in the head section, but use "defer" loading to allow the
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browser to start loading them as soon as possible. Actual execution of deferred
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scripts happens once the HTML is fully parsed.
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see https://flaviocopes.com/javascript-async-defer/#with-defer-in-the-head
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{%- endcomment -%}
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{%- if page.layout == 'landing' -%}
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<!-- landing page scripts -->
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<script defer src="/js/theme-switcher.js"></script>
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<script defer src="/js/jquery.js"></script>
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<script defer src="/js/bootstrap.min.js"></script>
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{%- else -%}
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<script defer src="/js/theme-switcher.js"></script>
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<script defer src="/js/anchorlinks.js"></script>
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<script defer src="/js/jquery.js"></script>
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<script defer src="/js/bootstrap.min.js"></script>
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<script defer src="/js/docs.js"></script>
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{%- endif -%}
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{%- if site.local_search -%}
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<script defer src="/js/search.js"></script>
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{%- endif -%}
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{%- comment -%}
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preload fonts: https://www.freecodecamp.org/news/web-fonts-in-2018-f191a48367e8/
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we only preload the "woff2" variants, as older formats (woff, eot) are only used
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by older browsers, and we don't optimize for those.
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{%- endcomment -%}
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<link rel="preload" as="font" href="https://fonts.gstatic.com/s/opensans/v18/mem8YaGs126MiZpBA-UFVZ0bf8pkAg.woff2" type="font/woff2" crossorigin="anonymous">
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<link rel="preload" as="font" href="/fonts/geomanist/hinted-Geomanist-Book.woff2" type="font/woff2" crossorigin="anonymous">
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<link rel="preload" as="font" href="/fonts/geomanist/hinted-Geomanist-Regular.woff2" type="font/woff2" crossorigin="anonymous">
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<link rel="preload" as="font" href="/fonts/glyphicons-halflings-regular.woff2" type="font/woff2" crossorigin="anonymous">
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<link rel="preload" as="font" href="/fonts/fontawesome-webfont.woff2?v=4.7.0" type="font/woff2" crossorigin="anonymous">
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<link rel="stylesheet" href="/css/font-awesome.min.css">
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<link rel="stylesheet" href="/css/bootstrap.min.css">
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<link rel="stylesheet" href="/css/style.css" id="pagestyle">
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<!-- SEO stuff -->
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<meta name="twitter:title" itemprop="title name" content="{{ page.title | default: page_title }}"/>
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<meta name="twitter:description" property="og:description" itemprop="description" content="{{ page_description | escape_once }}" />
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<meta name="twitter:card" content="summary"/>
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<meta name="twitter:domain" content="docs.docker.com"/>
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<meta name="twitter:site" content="@docker_docs"/>
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<meta name="twitter:url" content="https://twitter.com/docker_docs"/>
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<meta name="twitter:image:src" content="/images/docs@2x.png"/>
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<meta name="twitter:image:alt" content="Docker Documentation"/>
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<meta property="og:title" content="{{ page.title | default: page_title }}" />
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<meta property="og:description" content="{{ page.description | default: page_description | escape_once }}" />
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<meta property="og:type" content="website"/>
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<meta property="og:updated_time" itemprop="dateUpdated" content="{% if page.date %}{{ page.date | date_to_xmlschema }}{% else %}{{ site.time | date_to_xmlschema }}{% endif %}"/>
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<meta property="og:image" itemprop="image primaryImageOfPage" content="/images/docs@2x.png"/>
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<meta property="og:locale" content="en_US" />
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<meta property="og:url" content="https://docs.docker.com{{ page.url }}" />
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<meta property="og:site_name" content="Docker Documentation" />
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<meta property="article:published_time" itemprop="datePublished" content="{% if page.date %}{{ page.date | date_to_xmlschema }}{% else %}{{ site.time | date_to_xmlschema }}{% endif %}"/>
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<script type="application/ld+json">{"@context":"http://schema.org","@type":"WebPage","headline":{{ page.title | default: page_title | jsonify }},"description":{{ page.description | default: page_description | jsonify }},"url":"https://docs.docker.com{{ page.url }}"}</script>
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<!-- END SEO STUFF -->
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</head>
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