https://www.codrut.pro/tags/docker-compose/ Recent content in Docker-Compose on Codrut Constantin Gusoi Hugo en Sun, 21 Jun 2020 12:58:39 +0000 https://www.codrut.pro/snippets/reuse-yaml-sections-with-anchors/ Sun, 21 Jun 2020 12:58:39 +0000 https://www.codrut.pro/snippets/reuse-yaml-sections-with-anchors/ <p>Define an anchor using the <code>&amp;</code> character and reference it everywhere using the <code>&lt;&lt;: *</code> alias:</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-yml" data-lang="yml"><span style="display:flex;"><span><span style="color:#f92672">version</span>: <span style="color:#e6db74">&#39;2.4&#39;</span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span><span style="color:#f92672">x-default-logging</span>: <span style="color:#75715e">&amp;logging</span> </span></span><span style="display:flex;"><span> <span style="color:#f92672">logging</span>: </span></span><span style="display:flex;"><span> <span style="color:#f92672">options</span>: </span></span><span style="display:flex;"><span> <span style="color:#f92672">max-size</span>: <span style="color:#e6db74">&#39;12m&#39;</span> </span></span><span style="display:flex;"><span> <span style="color:#f92672">max-file</span>: <span style="color:#e6db74">&#39;5&#39;</span> </span></span><span style="display:flex;"><span> <span style="color:#f92672">driver</span>: <span style="color:#ae81ff">json-file</span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span><span style="color:#f92672">services</span>: </span></span><span style="display:flex;"><span> <span style="color:#f92672">web</span>: </span></span><span style="display:flex;"><span> <span style="color:#f92672">image</span>: <span style="color:#ae81ff">alpine:latest</span> </span></span><span style="display:flex;"><span> <span style="color:#f92672">command</span>: <span style="color:#ae81ff">/bin/true</span> </span></span><span style="display:flex;"><span> <span style="color:#f92672">&lt;&lt;</span>: <span style="color:#75715e">*logging</span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span> <span style="color:#f92672">postgres</span>: </span></span><span style="display:flex;"><span> <span style="color:#f92672">image</span>: <span style="color:#ae81ff">postgres:alpine</span> </span></span><span style="display:flex;"><span> <span style="color:#f92672">&lt;&lt;</span>: <span style="color:#75715e">*logging</span> </span></span><span style="display:flex;"><span> </span></span><span style="display:flex;"><span> <span style="color:#f92672">redis</span>: </span></span><span style="display:flex;"><span> <span style="color:#f92672">image</span>: <span style="color:#ae81ff">redis:alpine</span> </span></span><span style="display:flex;"><span> <span style="color:#f92672">&lt;&lt;</span>: <span style="color:#75715e">*logging</span> </span></span></code></pre></div><p>If you run <code>docker-compose config</code> you&rsquo;ll see <code>x-default-logging</code> is gone and aliases are replaced.</p>