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<h1 id="docker">Docker</h1>
<h2 id="quick-start">Quick Start</h2>
<pre><code class="lang-bash">cp .env.example .env # create your config
docker compose up -d # start the server
</code></pre>
<p>On first run the server automatically generates JWT and encryption keys, creates the database, and seeds a <code>#general</code> channel. Connect with the EchoHub client to <code>http://localhost:5000</code>.</p>
<h3 id="using-a-pre-built-image">Using a Pre-built Image</h3>
<p>Instead of building locally, you can pull from GHCR. In <code>docker-compose.yml</code>, replace the <code>build</code> block:</p>
<pre><code class="lang-yaml">services:
echohub-server:
image: ghcr.io/huebyte/echohub-server:latest
# build:
# context: ./src
# dockerfile: EchoHub.Server/Dockerfile
</code></pre>
<h2 id="configuration">Configuration</h2>
<p>All settings are configured through the <code>.env</code> file. These are ASP.NET Core environment variables that override <code>appsettings.json</code>.</p>
<table>
<thead>
<tr>
<th>Variable</th>
<th>Default</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>Server__Name</code></td>
<td>My EchoHub Server</td>
<td>Display name for your server</td>
</tr>
<tr>
<td><code>Server__Description</code></td>
<td>A self-hosted EchoHub chat server</td>
<td>Server description</td>
</tr>
<tr>
<td><code>Server__PublicServer</code></td>
<td><code>false</code></td>
<td>List on the <a href="https://echohub.voidcube.cloud/servers">public directory</a></td>
</tr>
<tr>
<td><code>Server__PublicHost</code></td>
<td><em>(empty)</em></td>
<td>Public address for the directory listing</td>
</tr>
<tr>
<td><code>Server__Admins__0</code></td>
<td><em>(empty)</em></td>
<td>Admin username (use <code>__1</code>, <code>__2</code> for more)</td>
</tr>
<tr>
<td><code>Jwt__Secret</code></td>
<td><em>(auto-generated)</em></td>
<td>JWT signing key. Auto-generated on first run</td>
</tr>
<tr>
<td><code>Encryption__Key</code></td>
<td><em>(auto-generated)</em></td>
<td>AES encryption key. Auto-generated on first run</td>
</tr>
<tr>
<td><code>Encryption__EncryptDatabase</code></td>
<td><code>false</code></td>
<td>Encrypt message content in the database</td>
</tr>
<tr>
<td><code>Storage__CleanupIntervalHours</code></td>
<td><code>1</code></td>
<td>How often to clean expired uploads</td>
</tr>
<tr>
<td><code>Storage__RetentionDays</code></td>
<td><code>30</code></td>
<td>Days to keep uploaded files</td>
</tr>
<tr>
<td><code>Irc__Enabled</code></td>
<td><code>false</code></td>
<td>Enable the IRC gateway</td>
</tr>
<tr>
<td><code>Irc__Port</code></td>
<td><code>6667</code></td>
<td>IRC plain-text port</td>
</tr>
<tr>
<td><code>Irc__TlsEnabled</code></td>
<td><code>false</code></td>
<td>Enable IRC over TLS</td>
</tr>
<tr>
<td><code>Irc__TlsPort</code></td>
<td><code>6697</code></td>
<td>IRC TLS port</td>
</tr>
<tr>
<td><code>Irc__ServerName</code></td>
<td><code>echohub</code></td>
<td>IRC server name shown to clients</td>
</tr>
<tr>
<td><code>Irc__Motd</code></td>
<td>Welcome to EchoHub IRC Gateway!</td>
<td>Message of the day</td>
</tr>
<tr>
<td><code>Serilog__MinimumLevel__Default</code></td>
<td><code>Information</code></td>
<td>Log level (<code>Debug</code>, <code>Warning</code>, etc.)</td>
</tr>
</tbody>
</table>
<h2 id="persistent-data">Persistent Data</h2>
<p>All server state lives in a single Docker volume mounted at <code>/app/data</code>:</p>
<pre><code class="lang-text">/app/data/
├── appsettings.json # generated config with JWT/encryption keys
├── echohub.db # SQLite database
├── uploads/ # uploaded files and avatars
└── logs/ # rolling log files (14-day retention)
</code></pre>
<h3 id="backup">Backup</h3>
<pre><code class="lang-bash"># stop the server to ensure a consistent snapshot
docker compose stop
# copy the data volume to a local directory
docker cp echohub-server:/app/data ./backup
docker compose start
</code></pre>
<h2 id="irc-gateway">IRC Gateway</h2>
<p>To enable IRC, set these in your <code>.env</code>:</p>
<pre><code class="lang-env">Irc__Enabled=true
</code></pre>
<p>Then uncomment the port in <code>docker-compose.yml</code>:</p>
<pre><code class="lang-yaml">ports:
- &quot;5000:5000&quot;
- &quot;6697:6697&quot; # IRC (TLS encrypted, preferred)
</code></pre>
<p>For TLS, also set:</p>
<pre><code class="lang-env">Irc__TlsEnabled=true
Irc__TlsCertPath=/app/data/cert.pfx
Irc__TlsCertPassword=your_password
</code></pre>
<p>Mount your certificate into the data volume or bind-mount it directly.</p>
<p>IRC users must have an existing EchoHub account. See <a href="getting-started.html#connect-via-irc">Getting Started</a> for client connection examples.</p>
<h2 id="updating">Updating</h2>
<pre><code class="lang-bash"># if using pre-built images
docker compose pull
docker compose up -d
# if building locally
docker compose build
docker compose up -d
</code></pre>
<p>Data persists across updates since it lives in the named volume.</p>
<h2 id="troubleshooting">Troubleshooting</h2>
<p><strong>Port already in use</strong> -- Another process is using port 5000. Change the host port in <code>docker-compose.yml</code>:</p>
<pre><code class="lang-yaml">ports:
- &quot;8080:5000&quot; # access via http://localhost:8080
</code></pre>
<p><strong>Permission denied on volume</strong> -- The container runs as a non-root <code>echohub</code> user (UID 999). If using bind mounts instead of named volumes, ensure the directory is writable.</p>
<p><strong>View logs</strong> -- Check the container output:</p>
<pre><code class="lang-bash">docker compose logs -f echohub-server
</code></pre>
<p>File-based logs are also available inside the volume at <code>/app/data/logs/</code>.</p>
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