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<section id="docker-container">
<span id="installation-docker"></span><h1>Docker Container<a class="headerlink" href="#docker-container" title="Link to this heading"></a></h1>
<hr class="docutils" />
<aside class="sidebar">
<p class="sidebar-title">info</p>
<ul class="simple">
<li><p><a class="reference external" href="https://hub.docker.com/r/searxng/searxng">searxng/searxng &#64;dockerhub</a></p></li>
<li><p><a class="reference external" href="https://github.com/Fauli1221/PonySearch/blob/master/Dockerfile">git://Dockerfile</a></p></li>
<li><p><a class="reference external" href="https://docs.docker.com/get-started/overview">Docker overview</a></p></li>
<li><p><a class="reference external" href="https://docs.docker.com/get-started/docker_cheatsheet.pdf">Docker Cheat Sheet</a></p></li>
<li><p><a class="reference external" href="https://alpinelinux.org">Alpine Linux</a>
<a class="reference external" href="https://en.wikipedia.org/wiki/Alpine_Linux">(wiki)</a>
<a class="reference external" href="https://pkgs.alpinelinux.org/packages">apt packages</a></p></li>
<li><p>Alpine’s <code class="docutils literal notranslate"><span class="pre">/bin/sh</span></code> is <a class="reference external" href="https://manpages.debian.org/jump?q=dash">dash</a></p></li>
</ul>
</aside>
<p><strong>If you intend to create a public instance using Docker, use our well maintained
docker container</strong></p>
<ul class="simple">
<li><p><a class="reference external" href="https://hub.docker.com/r/searxng/searxng">searxng/searxng &#64;dockerhub</a>.</p></li>
</ul>
<aside class="sidebar">
<p class="sidebar-title">hint</p>
<p>The rest of this article is of interest only to those who want to create and
maintain their own Docker images.</p>
</aside>
<p>The sources are hosted at <a class="reference external" href="https://github.com/searxng/searxng-docker">searxng-docker</a> and the container includes:</p>
<ul class="simple">
<li><p>a HTTPS reverse proxy <a class="reference external" href="https://hub.docker.com/_/caddy">[caddy]</a> and</p></li>
<li><p>a <a class="reference external" href="https://redis.io/">Redis</a> DB</p></li>
</ul>
<p>The <a class="reference external" href="https://github.com/searxng/searxng-docker/blob/master/searxng/settings.yml">default SearXNG setup</a>
of this container:</p>
<ul class="simple">
<li><p>enables <a class="reference internal" href="searx.limiter.html#limiter"><span class="std std-ref">limiter</span></a> to protect against bots</p></li>
<li><p>enables <a class="reference internal" href="settings/settings_server.html#image-proxy"><span class="std std-ref">image proxy</span></a> for better privacy</p></li>
<li><p>enables <a class="reference internal" href="settings/settings_ui.html#static-use-hash"><span class="std std-ref">cache busting</span></a> to save bandwidth</p></li>
</ul>
<hr class="docutils" />
<section id="get-docker">
<h2>Get Docker<a class="headerlink" href="#get-docker" title="Link to this heading"></a></h2>
<p>If you plan to build and maintain a docker image by yourself, make sure you have
<a class="reference external" href="https://docs.docker.com/get-docker/">Docker installed</a>. On Linux don’t
forget to add your user to the docker group (log out and log back in so that
your group membership is re-evaluated):</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>$<span class="w"> </span>sudo<span class="w"> </span>usermod<span class="w"> </span>-a<span class="w"> </span>-G<span class="w"> </span>docker<span class="w"> </span><span class="nv">$USER</span>
</pre></div>
</div>
</section>
<section id="searxng-searxng">
<h2>searxng/searxng<a class="headerlink" href="#searxng-searxng" title="Link to this heading"></a></h2>
<aside class="sidebar">
<p class="sidebar-title"><code class="docutils literal notranslate"><span class="pre">docker</span> <span class="pre">run</span></code></p>
<ul class="simple">
<li><p><a class="reference external" href="https://docs.docker.com/engine/reference/run/#clean-up---rm">--rm</a>
automatically clean up when container exits</p></li>
<li><p><a class="reference external" href="https://docs.docker.com/engine/reference/run/#detached--d">-d</a> start
detached container</p></li>
<li><p><a class="reference external" href="https://docs.docker.com/engine/reference/run/#volume-shared-filesystems">-v</a>
mount volume <code class="docutils literal notranslate"><span class="pre">HOST:CONTAINER</span></code></p></li>
</ul>
</aside>
<p>The docker image is based on <a class="reference external" href="https://github.com/Fauli1221/PonySearch/blob/master/Dockerfile">git://Dockerfile</a> and available from
<a class="reference external" href="https://hub.docker.com/r/searxng/searxng">searxng/searxng &#64;dockerhub</a>. Using the docker image is quite easy, for
instance you can pull the <a class="reference external" href="https://hub.docker.com/r/searxng/searxng">searxng/searxng &#64;dockerhub</a> image and deploy a local
instance using <a class="reference external" href="https://docs.docker.com/engine/reference/run/">docker run</a>:</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>$<span class="w"> </span>mkdir<span class="w"> </span>my-instance
$<span class="w"> </span><span class="nb">cd</span><span class="w"> </span>my-instance
$<span class="w"> </span><span class="nb">export</span><span class="w"> </span><span class="nv">PORT</span><span class="o">=</span><span class="m">8080</span>
$<span class="w"> </span>docker<span class="w"> </span>pull<span class="w"> </span>searxng/searxng
$<span class="w"> </span>docker<span class="w"> </span>run<span class="w"> </span>--rm<span class="w"> </span><span class="se">\</span>
<span class="w"> </span>-d<span class="w"> </span>-p<span class="w"> </span><span class="si">${</span><span class="nv">PORT</span><span class="si">}</span>:8080<span class="w"> </span><span class="se">\</span>
<span class="w"> </span>-v<span class="w"> </span><span class="s2">&quot;</span><span class="si">${</span><span class="nv">PWD</span><span class="si">}</span><span class="s2">/searxng:/etc/searxng&quot;</span><span class="w"> </span><span class="se">\</span>
<span class="w"> </span>-e<span class="w"> </span><span class="s2">&quot;BASE_URL=http://localhost:</span><span class="nv">$PORT</span><span class="s2">/&quot;</span><span class="w"> </span><span class="se">\</span>
<span class="w"> </span>-e<span class="w"> </span><span class="s2">&quot;INSTANCE_NAME=my-instance&quot;</span><span class="w"> </span><span class="se">\</span>
<span class="w"> </span>searxng/searxng
2f998....<span class="w"> </span><span class="c1"># container&#39;s ID</span>
</pre></div>
</div>
<p>The environment variables UWSGI_WORKERS and UWSGI_THREADS overwrite the default
number of UWSGI processes and UWSGI threads specified in <cite>/etc/searxng/uwsgi.ini</cite>.</p>
<p>Open your WEB browser and visit the URL:</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>$<span class="w"> </span>xdg-open<span class="w"> </span><span class="s2">&quot;http://localhost:</span><span class="nv">$PORT</span><span class="s2">&quot;</span>
</pre></div>
</div>
<p>Inside <code class="docutils literal notranslate"><span class="pre">${PWD}/searxng</span></code>, you will find <code class="docutils literal notranslate"><span class="pre">settings.yml</span></code> and <code class="docutils literal notranslate"><span class="pre">uwsgi.ini</span></code>. You
can modify these files according to your needs and restart the Docker image.</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>$<span class="w"> </span>docker<span class="w"> </span>container<span class="w"> </span>restart<span class="w"> </span>2f998
</pre></div>
</div>
<p>Use command <code class="docutils literal notranslate"><span class="pre">container</span> <span class="pre">ls</span></code> to list running containers, add flag <a class="reference external" href="https://docs.docker.com/engine/reference/commandline/container_ls">-a</a> to list
exited containers also. With <code class="docutils literal notranslate"><span class="pre">container</span> <span class="pre">stop</span></code> a running container can be
stopped. To get rid of a container use <code class="docutils literal notranslate"><span class="pre">container</span> <span class="pre">rm</span></code>:</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>$<span class="w"> </span>docker<span class="w"> </span>container<span class="w"> </span>ls
CONTAINER<span class="w"> </span>ID<span class="w"> </span>IMAGE<span class="w"> </span>COMMAND<span class="w"> </span>CREATED<span class="w"> </span>...
2f998d725993<span class="w"> </span>searxng/searxng<span class="w"> </span><span class="s2">&quot;/sbin/tini -- /usr/…&quot;</span><span class="w"> </span><span class="m">7</span><span class="w"> </span>minutes<span class="w"> </span>ago<span class="w"> </span>...
$<span class="w"> </span>docker<span class="w"> </span>container<span class="w"> </span>stop<span class="w"> </span>2f998
$<span class="w"> </span>docker<span class="w"> </span>container<span class="w"> </span>rm<span class="w"> </span>2f998
</pre></div>
</div>
<aside class="sidebar">
<p class="sidebar-title">Warning</p>
<p>This might remove all docker items, not only those from SearXNG.</p>
</aside>
<p>If you won’t use docker anymore and want to get rid of all containers &amp; images
use the following <em>prune</em> command:</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>$<span class="w"> </span>docker<span class="w"> </span>stop<span class="w"> </span><span class="k">$(</span>docker<span class="w"> </span>ps<span class="w"> </span>-aq<span class="k">)</span><span class="w"> </span><span class="c1"># stop all containers</span>
$<span class="w"> </span>docker<span class="w"> </span>system<span class="w"> </span>prune<span class="w"> </span><span class="c1"># make some housekeeping</span>
$<span class="w"> </span>docker<span class="w"> </span>rmi<span class="w"> </span>-f<span class="w"> </span><span class="k">$(</span>docker<span class="w"> </span>images<span class="w"> </span>-q<span class="k">)</span><span class="w"> </span><span class="c1"># drop all images</span>
</pre></div>
</div>
<section id="shell-inside-container">
<h3>shell inside container<a class="headerlink" href="#shell-inside-container" title="Link to this heading"></a></h3>
<aside class="sidebar">
<p class="sidebar-title">Bashism</p>
<ul class="simple">
<li><p><a class="reference external" href="https://lwn.net/Articles/343924/">A tale of two shells: bash or dash</a></p></li>
<li><p><a class="reference external" href="http://mywiki.wooledge.org/Bashism">How to make bash scripts work in dash</a></p></li>
<li><p><a class="reference external" href="https://dev.to/bowmanjd/writing-bash-scripts-that-are-not-only-bash-checking-for-bashisms-and-testing-with-dash-1bli">Checking for Bashisms</a></p></li>
</ul>
</aside>
<p>Like in many other distributions, Alpine’s <a class="reference external" href="https://wiki.ubuntu.com/DashAsBinSh">/bin/sh</a> is <a class="reference external" href="https://manpages.debian.org/jump?q=dash">dash</a>. Dash is meant to be
<a class="reference external" href="https://pubs.opengroup.org/onlinepubs/9699919799">POSIX-compliant</a>.
Compared to debian, in the Alpine image <a class="reference external" href="https://manpages.debian.org/jump?q=bash">bash</a> is not installed. The
<a class="reference external" href="https://github.com/Fauli1221/PonySearch/blob/master/dockerfiles/docker-entrypoint.sh">git://dockerfiles/docker-entrypoint.sh</a> script is checked <em>against dash</em>
(<code class="docutils literal notranslate"><span class="pre">make</span> <span class="pre">tests.shell</span></code>).</p>
<p>To open a shell inside the container:</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>$<span class="w"> </span>docker<span class="w"> </span><span class="nb">exec</span><span class="w"> </span>-it<span class="w"> </span>2f998<span class="w"> </span>sh
</pre></div>
</div>
</section>
</section>
<section id="build-the-image">
<h2>Build the image<a class="headerlink" href="#build-the-image" title="Link to this heading"></a></h2>
<p>It’s also possible to build SearXNG from the embedded <a class="reference external" href="https://github.com/Fauli1221/PonySearch/blob/master/Dockerfile">git://Dockerfile</a>:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ git clone https://github.com/searxng/searxng.git
$ cd searxng
$ make docker.build
...
Successfully built 49586c016434
Successfully tagged searxng/searxng:latest
Successfully tagged searxng/searxng:1.0.0-209-9c823800-dirty
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
searxng/searxng 1.0.0-209-9c823800-dirty 49586c016434 13 minutes ago 308MB
searxng/searxng latest 49586c016434 13 minutes ago 308MB
alpine 3.13 6dbb9cc54074 3 weeks ago 5.61MB
</pre></div>
</div>
</section>
<section id="command-line">
<h2>Command line<a class="headerlink" href="#command-line" title="Link to this heading"></a></h2>
<aside class="sidebar">
<p class="sidebar-title">docker run</p>
<p>Use flags <code class="docutils literal notranslate"><span class="pre">-it</span></code> for <a class="reference external" href="https://docs.docker.com/engine/reference/run/#foreground">interactive processes</a>.</p>
</aside>
<p>In the <a class="reference external" href="https://github.com/Fauli1221/PonySearch/blob/master/Dockerfile">git://Dockerfile</a> the <a class="reference external" href="https://docs.docker.com/engine/reference/builder/#entrypoint">ENTRYPOINT</a> is defined as
<a class="reference external" href="https://github.com/Fauli1221/PonySearch/blob/master/dockerfiles/docker-entrypoint.sh">git://dockerfiles/docker-entrypoint.sh</a></p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>docker<span class="w"> </span>run<span class="w"> </span>--rm<span class="w"> </span>-it<span class="w"> </span>searxng/searxng<span class="w"> </span>-h
</pre></div>
</div>
<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>Command line:
-h Display this help
-d Dry run to update the configuration files.
-f Always update on the configuration files (existing files are renamed with
the .old suffix). Without this option, the new configuration files are
copied with the .new suffix
Environment variables:
INSTANCE_NAME settings.yml : general.instance_name
AUTOCOMPLETE settings.yml : search.autocomplete
BASE_URL settings.yml : server.base_url
MORTY_URL settings.yml : result_proxy.url
MORTY_KEY settings.yml : result_proxy.key
BIND_ADDRESS uwsgi bind to the specified TCP socket using HTTP protocol.
Default value: 0.0.0.0:8080
Volume:
/etc/searxng the docker entry point copies settings.yml and uwsgi.ini in
this directory (see the -f command line option)&quot;
</pre></div>
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