fix: configure Docker buildx for multi-arch images

- Add Docker QEMU setup for cross-platform builds
- Add Docker buildx setup
- Add GitHub Container Registry login
- Keep multi-arch Docker image configuration

Author: jackspirou

.github/workflows/release.yaml

@@ -36,6 +36,19 @@ jobs:
       with:
         go-version: '1.24'
 
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Log in to GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
     - name: Install Syft
       uses: anchore/sbom-action/[email protected]
 

.goreleaser.yaml

@@ -277,12 +277,32 @@ brews:
 
 # Docker image configuration
 dockers:
-  - id: tokenizer
+  - id: tokenizer-amd64
+    ids:
+      - tokenizer
+    goos: linux
+    goarch: amd64
+    image_templates:
+      - "ghcr.io/agentstation/tokenizer:{{ .Tag }}-amd64"
+    dockerfile: Dockerfile
+    use: buildx
+    build_flag_templates:
+      - "--pull"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.source=https://github.com/agentstation/tokenizer"
+      - "--label=org.opencontainers.image.description=High-performance tokenizer implementations in Go with unified CLI"
+      - "--label=org.opencontainers.image.licenses=MIT"
+      - "--platform=linux/amd64"
+  - id: tokenizer-arm64
     ids:
       - tokenizer
+    goos: linux
+    goarch: arm64
     image_templates:
-      - "ghcr.io/agentstation/tokenizer:{{ .Tag }}"
-      - "ghcr.io/agentstation/tokenizer:latest"
+      - "ghcr.io/agentstation/tokenizer:{{ .Tag }}-arm64"
     dockerfile: Dockerfile
     use: buildx
     build_flag_templates:
@@ -294,4 +314,15 @@ dockers:
       - "--label=org.opencontainers.image.source=https://github.com/agentstation/tokenizer"
       - "--label=org.opencontainers.image.description=High-performance tokenizer implementations in Go with unified CLI"
       - "--label=org.opencontainers.image.licenses=MIT"
-      - "--platform=linux/amd64,linux/arm64"
+      - "--platform=linux/arm64"
+
+# Docker manifest for multi-arch support
+docker_manifests:
+  - name_template: "ghcr.io/agentstation/tokenizer:{{ .Tag }}"
+    image_templates:
+      - "ghcr.io/agentstation/tokenizer:{{ .Tag }}-amd64"
+      - "ghcr.io/agentstation/tokenizer:{{ .Tag }}-arm64"
+  - name_template: "ghcr.io/agentstation/tokenizer:latest"
+    image_templates:
+      - "ghcr.io/agentstation/tokenizer:{{ .Tag }}-amd64"
+      - "ghcr.io/agentstation/tokenizer:{{ .Tag }}-arm64"