# 多重构建，减少镜像大小
# 构建：使用golang:1.15版本
FROM registry.cn-shenzhen.aliyuncs.com/fnuoos-prd/golang:1.18.4 as build

# 容器环境变量添加，会覆盖默认的变量值
ENV GO111MODULE=on
ENV GOPROXY=https://goproxy.cn,direct
ENV TZ="Asia/Shanghai"
# 设置工作区
WORKDIR /go/release

# 把全部文件添加到/go/release目录
ADD . .

# 编译：把main.go编译成可执行的二进制文件，命名为egg
RUN GOOS=linux CGO_ENABLED=0 GOARCH=amd64 go build -tags netgo -ldflags="-s -w" -installsuffix cgo -o egg main.go

FROM ubuntu:xenial as prod
LABEL maintainer="dengbiao"
ENV TZ="Asia/Shanghai"

# 时区纠正
RUN rm -f /etc/localtime \
    && ln -sv /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
    && echo "Asia/Shanghai" > /etc/timezone

# 更新 CA 证书库
RUN apt-get update && apt-get install -y ca-certificates

# 在build阶段复制可执行的go二进制文件app
COPY --from=build /go/release/egg ./egg

COPY --from=build /go/release/etc/cfg.yml /var/egg/cfg.yml

# 启动服务
CMD ["./egg","-c","/var/egg/cfg.yml"]