feat: 添加 Dockerfile 和建木 DevOps 流水线配置

- 多阶段 Docker 构建（golang:1.26-alpine + alpine:3.20）
- 流水线：push 到 master 自动测试、构建、部署到 ECS

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.devops/gitlink-cli.yml

@@ -0,0 +1,41 @@
+version: 2
+name: jtx_gitlink_cli
+description: "gitlink-cli 项目：代码提交时自动测试、构建并部署到服务器"
+trigger:
+  webhook: gitlink@1.0.0
+  event:
+    - ref: push
+      ruleset-operator: AND
+global:
+  concurrent: 1
+workflow:
+  - ref: start
+    name: 开始
+    task: start
+  - ref: git_clone_0
+    name: git clone
+    task: git_clone@1.2.9
+    input:
+      remote_url: '"https://gitlink.org.cn/jiangtx/gitlink-cli.git"'
+      ref: '"refs/heads/master"'
+      commit_id: '""'
+      depth: 1
+    needs:
+      - start
+  - ref: ssh_cmd_0
+    name: 测试并部署到服务器
+    task: ssh_cmd@1.1.1
+    input:
+      ssh_pass: ((jtx_gitlink_cli.jtx_gitlink_cli_ssh))
+      ssh_ip: '"121.41.212.97"'
+      ssh_port: '"22"'
+      ssh_user: '"root"'
+      ssh_cmd: >-
+        "cd /root && rm -rf gitlink-cli && git clone --depth=1 https://gitlink.org.cn/jiangtx/gitlink-cli.git && cd gitlink-cli && docker run --rm -v $(pwd):/build -w /build docker.1ms.run/library/golang:1.26-alpine go test -race ./... && docker build --no-cache -t gitlink-cli . && docker stop gitlink-cli || true && docker rm gitlink-cli || true && docker run -d --restart=always --name gitlink-cli gitlink-cli version"
+    needs:
+      - git_clone_0
+  - ref: end
+    name: 结束
+    task: end
+    needs:
+      - ssh_cmd_0

Dockerfile

@@ -0,0 +1,20 @@
+FROM docker.1ms.run/library/golang:1.26-alpine AS builder
+
+WORKDIR /build
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+
+RUN CGO_ENABLED=0 go build -ldflags "-s -w" -o gitlink-cli .
+
+FROM docker.1ms.run/library/alpine:3.20
+
+RUN apk add --no-cache ca-certificates git
+
+COPY --from=builder /build/gitlink-cli /usr/local/bin/gitlink-cli
+
+RUN chmod +x /usr/local/bin/gitlink-cli
+
+ENTRYPOINT ["gitlink-cli"]