更新 Dockerfile 和 GitHub Actions 工作流，支持多平台构建。添加 QEMU 设置以支持不同架构，修改 Dockerfile 以使用动态平台参数构建前后端应用。 (#14)

.github/workflows/docker-build-dev.yml

@@ -42,6 +42,9 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
             type=raw,value=latest,enable={{is_default_branch}}
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
@@ -51,6 +54,7 @@ jobs:
           context: .
           file: ./excalidraw-complete.Dockerfile
           push: true
+          platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.IMAGE_NAME }}:buildcache
           cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.IMAGE_NAME }}:buildcache,mode=max

.github/workflows/docker-build.yml

@@ -44,6 +44,9 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
             type=raw,value=latest,enable={{is_default_branch}}
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
@@ -53,6 +56,7 @@ jobs:
           context: .
           file: ./excalidraw-complete.Dockerfile
           push: true
+          platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.IMAGE_NAME }}:buildcache
           cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.IMAGE_NAME }}:buildcache,mode=max

excalidraw-complete.Dockerfile

@@ -1,5 +1,5 @@
 # 前端构建阶段
-FROM node:18 AS frontend-builder
+FROM --platform=$BUILDPLATFORM node:18 AS frontend-builder
 WORKDIR /app
 # 复制 excalidraw 子模块
 COPY excalidraw/ ./excalidraw/
@@ -7,9 +7,11 @@ COPY excalidraw/ ./excalidraw/
 RUN cd excalidraw && npm install -g pnpm && pnpm install && cd excalidraw-app && DISABLE_VITE_CHECKER=true pnpm build:app:docker
 
 # 后端构建阶段
-FROM golang:alpine AS backend-builder
+FROM --platform=$BUILDPLATFORM golang:alpine AS backend-builder
 RUN apk update && apk add --no-cache git
 WORKDIR /app
+ARG TARGETOS
+ARG TARGETARCH
 # 复制 Go 模块文件
 COPY go.mod go.sum ./
 RUN go mod download
@@ -18,10 +20,10 @@ COPY . .
 # 复制前端构建文件到正确位置，以便 Go embed 可以找到
 COPY --from=frontend-builder /app/excalidraw/excalidraw-app/build ./frontend/
 # 构建 Go 应用
-RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main .
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags="-s -w" -o main .
 
 # 最终运行镜像
-FROM alpine:latest
+FROM --platform=$TARGETPLATFORM alpine:latest
 RUN apk --no-cache add ca-certificates
 WORKDIR /root/
 # 复制后端二进制文件（已包含嵌入的前端文件）