ci: docker supports more platforms (#64)

.github/workflows/build.yml

@@ -327,10 +327,25 @@ jobs:
       - name: Build
         env:
           VERSION: ${{ needs.get-release.outputs.tag_name }}
-        run: |
-          tag=liwei2633/gopeed:${VERSION:1}
-          docker build -t $tag .
-          docker login -u liwei2633 -p ${{ secrets.DOCKER_PASSWORD }}
-          docker push $tag
-          docker tag $tag liwei2633/gopeed:latest
-          docker push liwei2633/gopeed:latest
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: liwei2633
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        env:
+          VERSION: ${{ needs.get-release.outputs.tag_name }}
+        with:
+          push: true
+          platforms: |
+            linux/386
+            linux/amd64
+            linux/arm64
+          tags: |
+            liwei2633:latest
+            liwei2633:${{ env.VERSION }}