Update readme, dockerfile

Dockerfile

@@ -7,14 +7,14 @@ RUN apk add --update tini
 ENTRYPOINT [ "/sbin/tini", "--" ]
 
 RUN addgroup -S $USERNAME && adduser -S $USERNAME -G $USERNAME
-RUN docker-php-ext-install pcntl
+#RUN docker-php-ext-install pcntl
 
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 RUN printf "[PHP]\ndate.timezone = \"%s\"\n" $TZ > /usr/local/etc/php/conf.d/tzone.ini
 
 WORKDIR /application
 COPY . /application
-RUN chown app:app /application/data
+RUN chown app:app /application/var
 
 USER $USERNAME