Update Dockerfile

Dockerfile

@@ -3,7 +3,7 @@ FROM alpine:latest
 #RUN apt-get update
 #RUN DEBIAN_FRONTEND=noninteractive apt-get install -y php7.4 php-sqlite3 php-mysql php-curl php-mbstring wget unzip
 #RUN echo "http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories
-RUN apk update && apk upgrade && apk add php php-sqlite3 php-curl php7-mysqli php-mbstring wget unzip
+RUN apk update && apk upgrade && apk add php php-sqlite3 php-curl php-mysqli php-mbstring wget unzip
 
 RUN wget -O /typecho.zip https://github.com/typecho/typecho/releases/download/v1.2.1/typecho.zip
 RUN mkdir -p /var/www/html && unzip /typecho.zip -d /var/www/html