change php to v7

Author: myf5

Dockerfile

@@ -1,5 +1,4 @@
-FROM php:5.6.31-fpm-alpine
-#FROM alpine:3.6
+FROM php:7.4.6-fpm-alpine3.11
 
 MAINTAINER Jing Lin <[email protected]>
 
@@ -290,4 +289,4 @@ ADD supervisord.conf /etc/supervisord.conf
 RUN chmod 755 /start.sh
 
 EXPOSE 80/tcp 443/tcp
-CMD ["/start.sh"]
+CMD ["/start.sh"]