feat: support multi-arch Docker image

Author: sparfenyuk

.github/workflows/cd.yaml

@@ -6,14 +6,20 @@ on:
 
 jobs:
   docker-hub:
-    name: Push Docker image to Docker Hub
+    name: Push multi-arch Docker image to Docker Hub
     runs-on: ubuntu-latest
     permissions:
       contents: read
 
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@4574d27a4764455b42196d70a065bc6853246a25 #v3.4.0
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@f7ce87c1d6bead3e36075b2ce75da1f6cc28aaca #v3.9.0
+
       - name: Log in to Docker Hub
         uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # v3.3.0
         with:
@@ -24,11 +30,14 @@ jobs:
         uses: docker/build-push-action@ca877d9245402d1537745e0e356eab47c3520991 # v6.13.0
         with:
           context: .
+          platforms: linux/amd64,linux/arm64
           push: true
           tags: "${{ github.repository }}:${{ github.event.release.tag_name }}-alpine"
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
 
   ghcr-io:
-    name: Push Docker image to ghcr.io
+    name: Push multi-arch Docker image to ghcr.io
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -37,6 +46,12 @@ jobs:
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@4574d27a4764455b42196d70a065bc6853246a25 #v3.4.0
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@f7ce87c1d6bead3e36075b2ce75da1f6cc28aaca #v3.9.0
+
       - name: Log in to GHCR
         uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # v3.3.0
         with:
@@ -48,5 +63,8 @@ jobs:
         uses: docker/build-push-action@ca877d9245402d1537745e0e356eab47c3520991 # v6.13.0
         with:
           context: .
+          platforms: linux/amd64,linux/arm64
           push: true
           tags: "ghcr.io/${{ github.repository }}:${{ github.event.release.tag_name }}-alpine"
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.github/workflows/ci.yaml

@@ -112,10 +112,18 @@ jobs:
     needs: [lint, coverage, mypy]
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@4574d27a4764455b42196d70a065bc6853246a25 #v3.4.0
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@f7ce87c1d6bead3e36075b2ce75da1f6cc28aaca #v3.9.0
+
       - name: Build Docker image
         uses: docker/build-push-action@ca877d9245402d1537745e0e356eab47c3520991 # v6.13.0
         with:
           context: .
+          platforms: linux/amd64,linux/arm64
           push: false
           tags: "${{ github.repository }}:devel"
 

Dockerfile

@@ -1,6 +1,5 @@
-# Generated by https://smithery.ai. See: https://smithery.ai/docs/config#dockerfile
-# Use a Python image with uv pre-installed
-FROM ghcr.io/astral-sh/uv:python3.12-alpine AS uv
+# Build stage with explicit platform specification
+FROM --platform=$TARGETPLATFORM ghcr.io/astral-sh/uv:python3.12-alpine AS uv
 
 # Install the project into /app
 WORKDIR /app
@@ -23,7 +22,8 @@ ADD . /app
 RUN --mount=type=cache,target=/root/.cache/uv \
     uv sync --frozen --no-dev --no-editable
 
-FROM python:3.12-alpine
+# Final stage with explicit platform specification
+FROM --platform=$TARGETPLATFORM python:3.12-alpine
 
 LABEL org.opencontainers.image.source=https://github.com/sparfenyuk/mcp-proxy
 LABEL org.opencontainers.image.description="Connect to MCP servers that run on SSE transport, or expose stdio servers as an SSE server using the MCP Proxy server."