更新dockerfile，更新readme文件

Signed-off-by: jikun.zhang <[email protected]>

Author: jikun.zhang

Dockerfile

@@ -1,9 +1,8 @@
-FROM golang:1.16-alpine3.12 as builder
+FROM golang:1.20.6-alpine3.18 as builder
 
 WORKDIR $GOPATH/src/github.com/feiyu563/PrometheusAlert
 
-RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories && \
-    apk update && apk upgrade && \
+RUN apk update && \
     apk add --no-cache gcc g++ sqlite-libs make git
 
 ENV GO111MODULE on
@@ -15,17 +14,17 @@ COPY . $GOPATH/src/github.com/feiyu563/PrometheusAlert
 RUN make build
 
 # -----------------------------------------------------------------------------
-FROM alpine:3.12
+FROM alpine:3.18
 
 LABEL maintainer="jikun.zhang"
 
-RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories && \
-    apk add tzdata && \
+RUN apk update && \
+    apk add --no-cache tzdata && \
     cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
     echo "Asia/Shanghai" > /etc/timezone && \
     apk del tzdata && \
 	mkdir -p /app/logs && \
-    apk update && apk upgrade && apk add --no-cache sqlite-libs curl sqlite
+    apk add --no-cache sqlite-libs curl sqlite
 
 HEALTHCHECK --start-period=10s --interval=20s --timeout=3s --retries=3 \
     CMD curl -fs http://localhost:8080/health || exit 1

README.MD

@@ -73,9 +73,9 @@ curl http://localhost:8080/health
 
 ```
 #打开PrometheusAlert releases页面，根据需要选择需要的版本下载到本地解压并进入解压后的目录
-如linux版本(https://github.com/feiyu563/PrometheusAlert/releases/download/v4.7/linux.zip)
+如linux版本(https://github.com/feiyu563/PrometheusAlert/releases/download/v4.9/linux.zip)
 
-# wget https://github.com/feiyu563/PrometheusAlert/releases/download/v4.7/linux.zip && unzip linux.zip &&cd linux/
+# wget https://github.com/feiyu563/PrometheusAlert/releases/download/v4.9/linux.zip && unzip linux.zip &&cd linux/
 
 #运行PrometheusAlert
 # ./PrometheusAlert (#后台运行请执行 nohup ./PrometheusAlert &)