setup xdebug for development docker setup

Dockerfile-prod

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+FROM alpine:3.11
+LABEL Maintainer="Thilina, Pituwala <thilina@icehrm.com>" \
+      Description="IceHrm Docker Container with Nginx 1.16 & PHP-FPM 7.3 based on Alpine Linux."
+
+# Install packages
+RUN apk --no-cache add php7 php7-fpm php7-opcache php7-mysqli php7-json php7-openssl php7-curl \
+    php7-zlib php7-xml php7-phar php7-intl php7-dom php7-xmlreader php7-ctype php7-session \
+    php7-mbstring php7-gd nginx supervisor curl
+
+# Configure nginx
+COPY docker/prod/config/nginx.conf /etc/nginx/nginx.conf
+# Remove default server definition
+RUN rm /etc/nginx/conf.d/default.conf
+
+# Configure PHP-FPM
+COPY docker/prod/config/fpm-pool.conf /etc/php7/php-fpm.d/www.conf
+COPY docker/prod/config/php.ini /etc/php7/conf.d/custom.ini
+
+# Configure supervisord
+COPY docker/prod/config/supervisord.conf /etc/supervisor/conf.d/supervisord.conf
+
+# Setup document root
+RUN mkdir -p /var/www/html
+
+# Make sure files/folders needed by the processes are accessable when they run under the nobody user
+RUN chown -R nobody.nobody /var/www/html && \
+  chown -R nobody.nobody /run && \
+  chown -R nobody.nobody /var/lib/nginx && \
+  chown -R nobody.nobody /var/log/nginx
+
+# Switch to use a non-root user from here on
+USER nobody
+
+# Add application
+WORKDIR /var/www/html
+COPY --chown=nobody ./app /var/www/html/app/
+COPY --chown=nobody ./core /var/www/html/core/
+COPY --chown=nobody ./web /var/www/html/web/
+COPY --chown=nobody ./index.php /var/www/html/index.php
+COPY --chown=nobody ./docker/prod/config/config.php /var/www/html/app/config.php
+
+# Expose the port nginx is reachable on
+EXPOSE 8080
+
+# Let supervisord start nginx & php-fpm
+CMD ["/usr/bin/supervisord", "-c", "/etc/supervisor/conf.d/supervisord.conf"]
+
+# Configure a healthcheck to validate that everything is up&running
+HEALTHCHECK --timeout=10s CMD curl --silent --fail http://127.0.0.1:8080/fpm-ping