build(docker): 添加 Docker 构建支持

- Dockerfile: 添加 GOPROXY/GOSUMDB 代理设置，优化编译参数
- Makefile: 添加 docker/docker-push/docker-clean 命令

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile

@@ -6,19 +6,25 @@ WORKDIR /build
 # 安装构建依赖
 RUN apk add --no-cache git make
 
+# Go 代理设置（从宿主机传递）
+ARG GOPROXY=https://proxy.golang.org,direct
+ARG GOSUMDB=sum.golang.org
+ENV GOPROXY=${GOPROXY}
+ENV GOSUMDB=${GOSUMDB}
+
 # 依赖缓存层
 COPY go.mod go.sum ./
 RUN go mod download
 
 # 构建参数（版本信息）
-ARG VERSION=0.2.0
+ARG VERSION=dev
 ARG GIT_COMMIT=unknown
 ARG GIT_BRANCH=unknown
 ARG BUILD_TIME=unknown
 ARG GO_VERSION=unknown
-ARG BUILD_PLATFORM=linux/amd64
+ARG BUILD_PLATFORM=unknown
 
-# 构建
+# 构建（参数与 make build 保持一致）
 COPY . .
 RUN CGO_ENABLED=0 GOOS=linux go build \
     -ldflags="-s -w \
@@ -28,6 +34,8 @@ RUN CGO_ENABLED=0 GOOS=linux go build \
         -X 'rua.plus/lolly/internal/app.BuildTime=${BUILD_TIME}' \
         -X 'rua.plus/lolly/internal/app.GoVersion=${GO_VERSION}' \
         -X 'rua.plus/lolly/internal/app.BuildPlatform=${BUILD_PLATFORM}'" \
+    -gcflags="-l=4" \
+    -asmflags="-l=4" \
     -trimpath \
     -o /build/lolly \
     main.go

Makefile

@@ -271,6 +271,37 @@ clean:
 	rm -f coverage.out coverage.html
 	@echo "Clean complete."
 
+# ============================================
+# Docker 命令
+# ============================================
+
+# 构建 Docker 镜像
+docker:
+	@echo "Building Docker image..."
+	docker build --build-arg VERSION=$(VERSION) --build-arg GIT_COMMIT=$(shell git rev-parse HEAD 2>/dev/null || echo "unknown") --build-arg GIT_BRANCH=$(GIT_BRANCH) --build-arg BUILD_TIME='$(BUILD_TIME)' --build-arg GO_VERSION='$(GO_VERSION)' --build-arg BUILD_PLATFORM=linux/$(shell go env GOARCH 2>/dev/null || echo "amd64") --build-arg GOPROXY='$(shell go env GOPROXY)' --build-arg GOSUMDB='$(shell go env GOSUMDB)' -t $(APP_NAME):$(VERSION) -t $(APP_NAME):latest .
+	@echo "Docker image built: $(APP_NAME):$(VERSION), $(APP_NAME):latest"
+
+# 推送 Docker 镜像（需要先 docker login）
+docker-push:
+	@echo "Pushing Docker image..."
+	@echo "Usage: make docker-push REGISTRY=<registry>"
+	@if [ -z "$(REGISTRY)" ]; then \
+		echo "Error: REGISTRY not specified"; \
+		echo "Example: make docker-push REGISTRY=docker.io/myuser"; \
+		exit 1; \
+	fi
+	docker tag $(APP_NAME):$(VERSION) $(REGISTRY)/$(APP_NAME):$(VERSION)
+	docker tag $(APP_NAME):latest $(REGISTRY)/$(APP_NAME):latest
+	docker push $(REGISTRY)/$(APP_NAME):$(VERSION)
+	docker push $(REGISTRY)/$(APP_NAME):latest
+	@echo "Pushed to: $(REGISTRY)/$(APP_NAME):$(VERSION)"
+
+# 清理 Docker 镜像
+docker-clean:
+	@echo "Cleaning Docker images..."
+	docker rmi $(APP_NAME):$(VERSION) $(APP_NAME):latest 2>/dev/null || true
+	@echo "Docker images cleaned."
+
 # ============================================
 # 帮助
 # ============================================
@@ -312,6 +343,11 @@ help:
 	@echo "  make deps           - Download dependencies"
 	@echo "  make update-deps    - Update dependencies"
 	@echo ""
+	@echo "Docker:"
+	@echo "  make docker         - Build Docker image"
+	@echo "  make docker-push    - Push to registry (REGISTRY=<url>)"
+	@echo "  make docker-clean   - Remove local images"
+	@echo ""
 	@echo "Other:"
 	@echo "  make install        - Install to GOPATH/bin"
 	@echo "  make clean          - Clean build artifacts"