feat: add Docker support for Upsun CLI with build and push workflow

.github/workflows/release.yml

@@ -7,6 +7,7 @@ on:
 
 permissions:
   contents: write
+  packages: write
 
 jobs:
   release:
@@ -120,3 +121,65 @@ jobs:
         if: always()
         run: |
           rm -rf "${{ steps.signing-keys.outputs.key_dir }}"
+
+  docker:
+    runs-on: ${{ matrix.runner }}
+    needs: release
+    strategy:
+      matrix:
+        include:
+          - runner: ubuntu-latest
+            platform: linux/amd64
+            suffix: amd64
+          - runner: ubuntu-24.04-arm
+            platform: linux/arm64
+            suffix: arm64
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: https://github.com/${{ github.repository }}.git#${{ github.ref }}
+          platforms: ${{ matrix.platform }}
+          push: true
+          tags: ghcr.io/upsun/cli:${{ github.ref_name }}-${{ matrix.suffix }}
+          build-args: |
+            VERSION=${{ github.ref_name }}
+          cache-from: type=gha,scope=${{ matrix.suffix }}
+          cache-to: type=gha,mode=max,scope=${{ matrix.suffix }}
+
+  docker-manifest:
+    runs-on: ubuntu-latest
+    needs: docker
+    permissions:
+      packages: write
+    steps:
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create and push manifest
+        run: |
+          docker manifest create ghcr.io/upsun/cli:${{ github.ref_name }} \
+            ghcr.io/upsun/cli:${{ github.ref_name }}-amd64 \
+            ghcr.io/upsun/cli:${{ github.ref_name }}-arm64
+          docker manifest push ghcr.io/upsun/cli:${{ github.ref_name }}
+          docker manifest create ghcr.io/upsun/cli:latest \
+            ghcr.io/upsun/cli:${{ github.ref_name }}-amd64 \
+            ghcr.io/upsun/cli:${{ github.ref_name }}-arm64
+          docker manifest push ghcr.io/upsun/cli:latest

Dockerfile

@@ -0,0 +1,13 @@
+FROM ubuntu:24.04
+
+# Install dependencies
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends curl bash git ssh-client && \
+    rm -rf /var/lib/apt/lists/*
+
+# Install Upsun CLI
+ARG VERSION=
+RUN curl -fsSL https://raw.githubusercontent.com/upsun/cli/main/installer.sh | INSTALL_METHOD=raw VERSION=$VERSION bash
+
+# Default command
+ENTRYPOINT ["upsun"]

README.md

@@ -112,6 +112,20 @@ sudo dnf install -y upsun-cli
 
 For manual installation, you can also [download the latest binaries](https://github.com/upsun/cli/releases/latest).
 
+### Docker
+
+The CLI is also available as a Docker image:
+
+```console
+docker run --rm -it ghcr.io/upsun/cli
+```
+
+To use a specific version:
+
+```console
+docker run --rm -it ghcr.io/upsun/cli:v6.0.0
+```
+
 ## Upgrade
 
 Upgrade using the same tool:
@@ -188,6 +202,7 @@ Releases are automated via GitHub Actions. To create a new release:
    - Sign packages (APK, DEB, RPM)
    - Create a GitHub release with all artifacts
    - Update package repositories at repositories.upsun.com
+   - Build and push Docker image to ghcr.io/upsun/cli
 
 ## Licenses