Description of the feature request
It would be convenient to have url of the app icon exposed as an environment variable e.g. as APP_ICON_URL.
Use case / for what or how I would use it
For instance in Slack step or any other notification channel.
Thanks for the #feature-request! Don’t forget to vote for it 
This would indeed be perfect in the Slack step!
Actually, it could even be a default parameter already set as true within the Slack step itself, this way we could just update the step version… et voilà !
This is how I do it now in script step:
AVATAR=`curl -X GET "https://api.bitrise.io/v0.1/apps/$BITRISE_APP_SLUG" -H "accept: application/json" -H "Authorization: $BITRISE_ACCESS_TOKEN" | jq -r .data.avatar_url`
envman add --key AVATAR_URL --value ${AVATAR}