Is it possible to set the platform image on role init?

[abtreece]

Hey @ssbarnea,

I'm struggling a bit with the tests for molecule-inspec. In order to exec various tests I need to pull in molecule-docker which is fine. The problem is the default image on init is docker.io/pycontribs/centos:8 and it does not seem like there is a way to override that setting. The current version of Inspec (2.2.3) that molecule-inspec is configured for does not have packages for CentOS 8. My preference would be to get tests passing before changing the actual functionality of the plugin.

Feels a bit chicken and egg... thoughts?

[ssbarnea]

You can use whatever image you want with molecule-docker, a prebuilt one or not. Just edit the molecule.yml file and write which image you want to use on it, it can even be from other registries.

[abtreece]

Yes, that's understood, but from an automated test (tox) perspective, is there an way to set it prior to the tests starting?

…

On Sat, Nov 7, 2020, 9:39 AM Sorin Sbarnea ***@***.***> wrote: You can use whatever image you want with molecule-docker, a prebuilt one or not. Just edit the molecule.yml file and write which image you want to use on it, it can even be from other registries. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#2950 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAEUN6OYDMRY3IH55F26YLTSOVS2JANCNFSM4TK5EJEA> .

[ssbarnea]

You can use environment variables with implicit values inside molecule.yml, the same way you would do in tox.ini files. This allows you to override the platforms being used.

I my early days of molecule I used that to control platform being used but I stopped doing it as it was inconvenient and made it harder for users to spot where does it comes from. The same can be said about overriding the driver being used. Obviously that the swap is limited between drivers with compatible settings, like docker and podman. For cloud ones is tricky as image names and flavors are almost always incompatible.