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Complete guide covering KDL spec language, composability (base/include/profiles), distro support (OmniOS primary, Ubuntu secondary), output formats (QCOW2/OCI/tar), architecture, CLI reference, and migration guides from omnios-image-builder and Packer.
307 lines
14 KiB
HTML
307 lines
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<main>
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<h1 id="oci-registry-push"><a class="header" href="#oci-registry-push">OCI Registry Push</a></h1>
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<p>Forger can push built images directly to OCI-compliant registries, including GitHub Container Registry (GHCR), Docker Hub, and self-hosted registries.</p>
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<h2 id="auto-push-target-configuration"><a class="header" href="#auto-push-target-configuration">Auto-Push (Target Configuration)</a></h2>
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<p>Set <code>push-to</code> on a target to automatically push after a successful build:</p>
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<pre><code class="language-kdl">target "vm" kind="qcow2" {
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disk-size "8G"
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bootloader "uefi"
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push-to "ghcr.io/myorg/omnios-image:latest"
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}
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target "container" kind="oci" {
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push-to "ghcr.io/myorg/omnios-container:latest"
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}
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</code></pre>
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<p>Skip the push with:</p>
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<pre><code class="language-bash">forger build --spec my-image.kdl --skip-push
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</code></pre>
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<h2 id="manual-push"><a class="header" href="#manual-push">Manual Push</a></h2>
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<p>Push a previously built image:</p>
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<pre><code class="language-bash"># Push OCI Image Layout
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forger push --image output/container/ --reference ghcr.io/myorg/myimage:latest
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# Push QCOW2 as OCI artifact
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forger push --image output/vm.qcow2 --reference ghcr.io/myorg/myvm:latest --artifact
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</code></pre>
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<h3 id="options"><a class="header" href="#options">Options</a></h3>
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<div class="table-wrapper"><table><thead><tr><th>Flag</th><th>Description</th></tr></thead><tbody>
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<tr><td><code>--image <PATH></code></td><td>Path to OCI Image Layout directory or QCOW2 file</td></tr>
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<tr><td><code>--reference <REF></code></td><td>Registry reference (e.g., <code>ghcr.io/org/image:tag</code>)</td></tr>
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<tr><td><code>--artifact</code></td><td>Push QCOW2 as OCI artifact (custom media types)</td></tr>
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<tr><td><code>--auth-file <PATH></code></td><td>JSON auth file for registry authentication</td></tr>
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</tbody></table>
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</div>
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<h2 id="authentication"><a class="header" href="#authentication">Authentication</a></h2>
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<h3 id="github-container-registry-ghcr"><a class="header" href="#github-container-registry-ghcr">GitHub Container Registry (GHCR)</a></h3>
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<p>Forger automatically uses the <code>GITHUB_TOKEN</code> environment variable when pushing to <code>ghcr.io</code>:</p>
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<pre><code class="language-bash">export GITHUB_TOKEN=ghp_...
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forger build --spec my-image.kdl
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</code></pre>
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<p>In GitHub Actions, the token is available automatically:</p>
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<pre><code class="language-yaml">- name: Build and push
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env:
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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run: forger build --spec images/omnios-rust-ci.kdl
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</code></pre>
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<h3 id="auth-file"><a class="header" href="#auth-file">Auth File</a></h3>
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<p>For other registries, provide a JSON auth file:</p>
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<pre><code class="language-json">{
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"username": "myuser",
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"password": "mypassword"
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}
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</code></pre>
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<p>Or with a token:</p>
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<pre><code class="language-json">{
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"token": "my-registry-token"
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}
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</code></pre>
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<pre><code class="language-bash">forger push --image output/container/ \
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--reference registry.example.com/myimage:latest \
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--auth-file auth.json
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</code></pre>
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<h3 id="anonymous-push"><a class="header" href="#anonymous-push">Anonymous Push</a></h3>
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<p>Local registries (localhost, 127.0.0.1) are accessed without authentication over HTTP (insecure mode).</p>
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<h2 id="qcow2-as-oci-artifact"><a class="header" href="#qcow2-as-oci-artifact">QCOW2 as OCI Artifact</a></h2>
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<p>When pushing QCOW2 images with <code>--artifact</code>, Forger uses custom OCI media types:</p>
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<ul>
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<li>Config: <code>application/vnd.cloudnebula.qcow2.config.v1+json</code></li>
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<li>Layer: <code>application/vnd.cloudnebula.qcow2.layer.v1</code></li>
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</ul>
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<p>This allows distributing VM disk images through container registries alongside container images, using a unified registry infrastructure.</p>
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<h2 id="pulling-qcow2-artifacts"><a class="header" href="#pulling-qcow2-artifacts">Pulling QCOW2 Artifacts</a></h2>
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<p>QCOW2 artifacts pushed to a registry can be pulled back as builder images or for deployment:</p>
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<pre><code class="language-kdl">builder {
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image "oci://ghcr.io/myorg/omnios-builder:latest"
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}
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</code></pre>
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<p>Forger resolves <code>oci://</code> references by pulling from the registry.</p>
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