* Add gitlab

Docker file changes for image size improvements.

Otherwise it doesn't work

* Added option to install the php calendar extension in php-fpm
* Added section about installing php calendar extension in php-fpm

* add redis webui
* Update env-example
* depends on redis

* add mongo webui
* update
* Update env-example

* Install phpdbg
* Change documentstion

This fix the following errors:
/bin/sh: 13: /root/.bashrc: shopt: not found
/bin/sh: 21: /root/.bashrc: shopt: not found
/bin/sh: 103: /root/.bashrc: source: not found

I do not know why but the pull request https://github.com/laradock/laradock/pull/1655 has lost the 'networks' code. I'll try to insert it Insert again ;-)

Add 'dind' image to run docker-in-docker: issue https://github.com/laradock/laradock/issues/1653

* add netdata container
* update document
* update document each part separate with 6 * \n
* remove unuse file

* Added commands in Workspace Dockerfile for installation of libpng with configurable env argument switch

* Updated documentation

This fixes the following warnings when installing "zip" php extension:
configure: WARNING: ========================================================
configure: WARNING: Use of bundled libzip is deprecated and will be removed.
configure: WARNING: Some features such as encryption and bzip2 are not available.
configure: WARNING: Use system library and --with-libzip is recommended.
configure: WARNING: ========================================================

volumes:
  - ./php-fpm/php${PHP_VERSION}.ini:/usr/local/etc/php/php.ini

Fix #1627, The POSTGRES_ENTRYPOINT_INITDB variable is not set. Defaulting to a blank string. (#1639)