use php 7.4 as base image

7.4/Dockerfile

+FROM php:7.4-fpm-alpine3.10
+ENTRYPOINT [ "/docker-entrypoint" ]
+VOLUME [ "/var/cache/vufind", "/usr/local/vufind" ]
+
+ENV VUFIND_CACHE_DIR=/var/cache/vufind \
+  VUFIND_APPLICATION_PATH=/usr/local/vufind \
+  VUFIND_LOCAL_DIR=/usr/local/vufind/local \
+  VUFIND_ENV=production \
+  NODE_ENV=production \
+  LIBRARY_PATH=/lib:/usr/lib
+
+COPY assets/docker-entrypoint /docker-entrypoint
+
+RUN apk add --no-cache --update --virtual .build-deps icu-dev freetype-dev libjpeg-turbo-dev libpng-dev libxslt-dev postgresql-dev zlib-dev libzip-dev bzip2-dev autoconf \
+  && apk add --no-cache --update libpng libjpeg-turbo freetype icu-libs libpq libxslt libzip python make g++ coreutils nodejs nodejs-npm git subversion openssh openssl bash \
+  && pear config-set http_proxy "`printenv http_proxy`" \
+  && docker-php-ext-configure gd --with-freetype-dir=/usr/include --with-jpeg-dir=/usr/include \
+  && docker-php-ext-install -j$(nproc) zip mysqli pdo_pgsql pdo_mysql pdo gd xsl intl soap bz2 \
+  && apk del .build-deps \
+  && npm install -g @ubleipzig/autoconfig eslint@"<3.0.0" \
+  # hack for issue https://github.com/sass/node-sass/issues/1757
+  && cd /tmp \
+  && npm install -j$(nproc) grunt-sass@"^1.0.0" \
+  && cd /tmp/node_modules/node-sass \
+  && node scripts/build -f -j $(nproc) \
+  && SASS_VER=`ls /tmp/node_modules/node-sass/vendor/` \
+  && cp /tmp/node_modules/node-sass/vendor/${SASS_VER}/binding.node /root/.npm/node-sass/3.13.1/${SASS_VER}_binding.node \
+  && rm /tmp/* -rf \
+  && cp -a ~/.npm ~www-data/.npm \
+  && chown www-data:www-data ~www-data/.npm -R \
+  && rm /var/lib/apt/lists/* -rf \
+  && pear install pear/Http_Request2 \
+  && pear channel-discover pear.phing.info \
+  && pear install phing/phing \
+  && chmod a+x /docker-entrypoint
+
+WORKDIR ${VUFIND_APPLICATION_PATH}
+
+CMD [ "php-fpm" ]

7.4/debug/Dockerfile

+FROM image-7.4
+VOLUME [ "/home/www-data/.npm", "/home/www-data/.composer" ]
+
+ENV VUFIND_ENV=development \
+  NODE_ENV=development
+
+COPY assets/docker-entrypoint-debug /docker-entrypoint
+
+RUN apk add --no-cache --update autoconf \
+  && pear config-set http_proxy "`printenv http_proxy`" \
+  && pecl install xdebug \
+  && docker-php-ext-enable xdebug \
+  && apk del autoconf \
+  && sed -i '1 a xdebug.remote_autostart=true' /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+  && sed -i '1 a xdebug.remote_mode=req' /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+  && sed -i '1 a xdebug.remote_handler=dbgp' /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+  && sed -i '1 a xdebug.remote_connect_back=1 ' /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+  && sed -i '1 a xdebug.remote_port=9000' /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+  && sed -i '1 a xdebug.remote_enable=1' /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+  && echo 'error_reporting=E_ALL' >/usr/local/etc/php/conf.d/development.ini \
+  && sed -e "s!^#\s*StrictHostKeyChecking ask!StrictHostKeyChecking no!" -i /etc/ssh/ssh_config \
+  && chmod a+x /docker-entrypoint