Bug: cannot remove container configuration

[aistis-]

Once an app is created on Marathon with container configuration, it is not possible to remove container configuration without recreating the app.

• GUI JSON mode: removing container key or setting container: null does not remove container configuration
• GUI leaving all container fields empty results error /container: must not be empty
• API: PATCH and PUT without container key or sending container: null does not remove container configuration
• API: PATCH and PUT sending with empty container values gives error that docker config is missing

[timcharper]

Unfortunately, there was never an implementation to unset a value for PUT/PATCH. You'll need to get the whole JSON document, edit it, and then re-POST it.

Have a look at my CLI project in mcli. https://github.com/timcharper/mcli. Requires bash 4.x. The Marathon cli script supports "edit", marathon-cli app edit .... Should help you do what you want.