use alpine:3.8 as base image

vimagick · vimagick · commit ecd336a20856 · 2019-03-02T00:05:31.000+08:00
diff --git a/Dockerfile b/Dockerfile
@@ -2,7 +2,7 @@
 # Dockerfile for shadowsocks-libev
 #
 
-FROM alpine
+FROM alpine:3.8
 MAINTAINER EasyPi Software Foundation
 
 ENV SS_VER 3.2.4

Original file line number	Diff line number	Diff line change
`@@ -2,7 +2,7 @@`
`2`	`2`	`# Dockerfile for shadowsocks-libev`
`3`	`3`	`#`
`4`	`4`
`5`		`-FROM alpine`
	`5`	`+FROM alpine:3.8`
`6`	`6`	`MAINTAINER EasyPi Software Foundation`
`7`	`7`
`8`	`8`	`ENV SS_VER 3.2.4`