# 多重构建，减少镜像大小
# 构建：使用golang:1.18版本
FROM registry.cn-shenzhen.aliyuncs.com/fnuoos-prd/golang:1.19 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_im
RUN GOOS=linux CGO_ENABLED=0 GOARCH=amd64 go build -o egg-im cmd/connect/main.go

FROM ubuntu:xenial as prod
LABEL maintainer="dengbiao"

# 时区纠正
ENV TZ="Asia/Shanghai"
RUN rm -f /etc/localtime \
    && ln -snf /usr/share/zoneinfo/$TZ /etc/localtime \
    && echo $TZ > /etc/timezone

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

# 启动服务
# 优化内核参数
#RUN sysctl -w net.ipv4.tcp_fin_timeout=15
#RUN sysctl -w net.ipv4.tcp_tw_recycle=1
#RUN sysctl -w net.ipv4.ip_local_port_range=1024 65535
#RUN sysctl -p
#CMD ["bash","-c","sysctl -w net.ipv4.tcp_timestamps=1 && sysctl -w net.ipv4.tcp_tw_reuse=1 && sysctl -w net.ipv4.tcp_tw_timeout=10 && sysctl -w net.ipv4.tcp_fin_timeout=10 && sysctl -w net.ipv4.ip_local_port_range='1024 65535' && ./egg-im"]
CMD ["./egg-im"]