Issue #33: Add ability to call xDebug via warden for CLI scripts

[molotovbliss]

Feature request enhancement #33

[davidalger]

@molotovbliss Thanks for this! I will try and take a good look at it some time next week. This highlights the need I think (referencing the gist you linked on #33) for adding the ability to setup custom commands on an installation of Warden as well.

[molotovbliss]

@molotovbliss Thanks for this! I will try and take a good look at it some time next week. This highlights the need I think (referencing the gist you linked on #33) for adding the ability to setup custom commands on an installation of Warden as well.

Np, wasn't sure if there was a better way to call docker exec via warden as it seems most go towards docker-compose. BTW, warden makes Magento dev a breeze. Thanks for the great tool.

[mike-keilty]

@molotovbliss I tested these changes out locally and they work great! Thank you for this.

[molotovbliss]

@mike-keilty If it helps just one person that's awesome in my book. BTW I believe the next warden release has a much more elegant approach than this. (See the referenced issue associated with this pr). Cheers! 🍺

[davidalger]

This PR has been rebased on latest develop and updated to conform to the following (slightly different) take on the original proposed solution:

1. Introduces a new command warden debug; when this is run the user is launched into a shell similarly to when warden shell is run, but in this case the shell is opened by default within the php-debug container.

2. When user is launched into a debug container, the env variable XDEBUG_REMOTE_HOST is passed in and conditionally set to either host.docker.internal on macOS and to the gateway IP of the warden network on Linux systems.

3. The base images have been updated to add the following to /etc/php-cli.ini bringing it all together without any potential for disrupting already present and reliable in-browser debugging:

[php]
xdebug.remote_autostart=on
xdebug.remote_host=${XDEBUG_REMOTE_HOST}

Big shout out to @wcrb15 for helping ascertain what the remote host should be configured to on Linux systems and to @molotovbliss for getting the ball rolling with the idea of a special debug command.