Dockerfile
FROM php:7.2-cli
ARG DEBIAN_FRONTEND=noninteractive
WORKDIR /app
RUN apt-get -y upgrade && \
apt-get - dist-upgrade && \
apt-get update && \
apt-get install -yqq zip git wget
RUN pecl install redis && \
pecl install xdebug && \
docker-php-ext-enable redis xdebug
RUN wget https://github.com/composer/composer/releases/download/1.9.1/composer.phar -q &&\
mv composer.phar /usr/bin/composer && \
chmod +x /usr/bin/composer