diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
new file mode 100644
index 0000000..0dd8fd1
--- /dev/null
+++ b/.github/workflows/docker-publish.yml
@@ -0,0 +1,89 @@
+name: Build and Publish Docker Image
+
+on:
+  workflow_call:
+    inputs:
+      version:
+        required: true
+        type: string
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    name: Build Docker Image (${{ matrix.platform }})
+    runs-on: ${{ matrix.runner }}
+    strategy:
+      matrix:
+        include:
+          - platform: linux/amd64
+            runner: ubuntu-latest
+          - platform: linux/arm64
+            runner: ubuntu-24.04-arm
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v7
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+
+      - name: Log in to Container Registry
+        uses: docker/login-action@v4
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Sanitize platform for tag
+        id: platform
+        run: |
+          PLATFORM_TAG=$(echo "${{ matrix.platform }}" | tr '/' '-')
+          echo "tag=$PLATFORM_TAG" >> "$GITHUB_OUTPUT"
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v7
+        with:
+          context: .
+          push: true
+          build-args: |
+            ORIGIN=${{ vars.FRONTEND_ORIGIN || 'https://www.sgf.dev' }}
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.version }}-${{ steps.platform.outputs.tag }}
+          labels: |
+            org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
+            org.opencontainers.image.revision=${{ github.sha }}
+          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+          cache-to: type=inline
+          platforms: ${{ matrix.platform }}
+          provenance: false
+
+  merge:
+    name: Create Multi-Arch Manifest
+    runs-on: ubuntu-latest
+    needs: build
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+
+      - name: Log in to Container Registry
+        uses: docker/login-action@v4
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create and push multi-arch manifest
+        run: |
+          docker buildx imagetools create \
+            -t ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.version }} \
+            -t ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest \
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.version }}-linux-amd64 \
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.version }}-linux-arm64
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..4fa7038
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,42 @@
+name: Release
+
+on:
+  push:
+    branches: [main]
+
+permissions:
+  contents: write
+  issues: write
+  pull-requests: write
+  packages: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    outputs:
+      new-release-published: ${{ steps.semantic.outputs.new-release-published }}
+      release-version: ${{ steps.semantic.outputs.release-version }}
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-node@v7
+        with:
+          node-version: "lts/*"
+
+      - run: npm install -g semantic-release@25.0.9 conventional-changelog-conventionalcommits@8.0.0 @semantic-release/exec@7.1.0
+
+      - name: Create Release
+        id: semantic
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npx semantic-release
+
+  docker:
+    needs: release
+    if: ${{ needs.release.outputs.new-release-published == 'true' }}
+    uses: ./.github/workflows/docker-publish.yml
+    with:
+      version: ${{ needs.release.outputs.release-version }}
+    secrets: inherit
diff --git a/.releaserc.json b/.releaserc.json
new file mode 100644
index 0000000..e079d52
--- /dev/null
+++ b/.releaserc.json
@@ -0,0 +1,19 @@
+{
+  "branches": ["main"],
+  "plugins": [
+    ["@semantic-release/commit-analyzer", {
+      "preset": "conventionalcommits",
+      "releaseRules": [
+        { "type": "chore", "release": "patch" },
+        { "type": "build", "release": "patch" }
+      ]
+    }],
+    ["@semantic-release/release-notes-generator", {
+      "preset": "conventionalcommits"
+    }],
+    "@semantic-release/github",
+    ["@semantic-release/exec", {
+      "successCmd": "echo 'new-release-published=true' >> $GITHUB_OUTPUT && echo 'release-version=${nextRelease.version}' >> $GITHUB_OUTPUT"
+    }]
+  ]
+}
diff --git a/README.md b/README.md
index 9c86ca8..8ddc0ba 100644
--- a/README.md
+++ b/README.md
@@ -114,6 +114,18 @@ The image defaults to port 3000 and `BODY_SIZE_LIMIT=9M`; it does not include a
 
 `.dockerignore` permits only build inputs and excludes local secrets and output.
 Run `npm test` for the unit suite. It type-checks tests once and runs every test
-folder, without a browser or live CMS. CI runs the same command, Svelte checking,
-generated API freshness checks and build. It does not deploy, use action secrets
-or build/push an image. Visual checks and complete member journeys belong in staging.
+folder, without a browser or live CMS. PR CI runs the same command, Svelte checking,
+generated API freshness checks and build. It does not deploy or build/push images.
+
+On `main`, semantic-release creates GitHub releases from Conventional Commits.
+A new release calls the reusable Docker publishing workflow to push native
+`linux/amd64` and `linux/arm64` images to `ghcr.io/sgfdevs/sgf.dev`, tagged
+with the release version and `latest`.
+
+Images build for the public repository Actions variable `FRONTEND_ORIGIN`,
+defaulting to `https://www.sgf.dev`. The workflow passes it as the Docker `ORIGIN`
+build argument. No CMS keys or other secrets are build arguments. Rebuild for a
+different origin; setting a runtime `ORIGIN` cannot change the built origin.
+Staging and production promotions remain manual; automated promotion jobs are
+disabled. Test staging, including visual checks and complete member journeys,
+before promoting to production.