corrected elasticsearch default username

Fix env variable name

Adding pcntl to php-fpm, php-worker, addresses #1419

* Fix #1544, Unable to locate package libgmp-dev.

Fix install php ext SOAP No package php-soap available

fix #1535 xdebug installation fails when php version is 5.6

Update index.md

Improve working

Add information for Windows hosts when adding custom cron jobs

Remove unused variable PHP_FPM_INSTALL_POSTGRES.

Update min. docker version

Add subversion support in workspace

Update env-example

Update apt sources before installing imagemagick

#1512

Fixed env variable name which points to host source directory.

Add missing syntax to continue line

Use xdebug with Laravel scheduler inside workspace container

Apply COPY vs ADD best practices

[feature] support for php worker hot load

Use Cached Flag for Application Path Volume

Should only use `ADD` for URLs (and even then, `curl` or `wget` are preferred, for numerous reasons, even within this repo) and when extracting archive contents as part of the `ADD` operation; otherwise `COPY` is clearer and (slightly) more efficient.

Fix minor typo!

Modify the sample config to support symfony 4