ci(workflow): 更新docker工作流配置

- 添加GOSUMDB=off设置并清理go缓存
- 修复工作空间路径变量引用错误
- 增加go.sum清理步骤

.gitea/workflows/docker.yml

@@ -67,13 +67,16 @@ jobs:
 
       - name: Prepare GO environment
         run: |
-          go env -w  GOPROXY=https://goproxy.cn,direct
+          go env -w GOPROXY=https://goproxy.cn,direct
           go env -w GOPRIVATE="${{ vars.DOMAIN_OF_GITEA}}"
+          go env -w GOSUMDB=off
           git config --global url."https://${{ env.GIT_USERNAME }}:${{ env.GIT_PASSWORD }}@${{ vars.DOMAIN_OF_GITEA}}/".insteadOf "https://${{ vars.DOMAIN_OF_GITEA}}/"
+          go clean -modcache
+          rm -rf go.sum
 
       - name: Build and push docker image
         run: |
-          source ${{gitea.WORKSPACE}}/deploy/.env
+          source ${{ github.workspace }}/deploy/.env
           go mod tidy
           make build-linux
           make docker