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<h1>Stop signals</h1>
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<p>When watchtower detects that a running container needs to be updated it will stop the container by sending it a SIGTERM signal.
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If your container should be shutdown with a different signal you can communicate this to watchtower by setting a label named <em>com.centurylinklabs.watchtower.stop-signal</em> with the value of the desired signal.</p>
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<p>This label can be coded directly into your image by using the <code>LABEL</code> instruction in your Dockerfile:</p>
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<pre><code class="docker">LABEL com.centurylinklabs.watchtower.stop-signal="SIGHUP"
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</code></pre>
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<p>Or, it can be specified as part of the <code>docker run</code> command line:</p>
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<pre><code class="bash">docker run -d --label=com.centurylinklabs.watchtower.stop-signal=SIGHUP someimage
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