Is it possible to specify a Dockerfile file?

[erikcc02]

Do you want to request a feature or report a bug?

I would like to make a suggestion

What is the current behavior?

Using Heroku's CLI, we have the -R option which checks Dockerfile files in directories but I couldn't find a way to specify a specific dockerfile file, for example "Dockerfile.heroku"

What is the expected behavior?

Have a -F option to specify a Dockerfile file

heroku container:push -f Dockerfile.heroku

It's just a suggestion, it seems to help me in scenarios where I want to have particularities in the images built for test and production environments, such as using a specific variable:
ENV ASPNETCORE_ENVIRONMENT="Staging"

Or even export certificates...etc

[sbosio]

Hello @erikcc02, sorry for the belated answer.

Have you explored using the default Dockerfile file and passing the env var values using --arg option flags?

I can add the feature request to our backlog, if that approach doesn't work for your use case, though. We cannot make commitments for a timeline just yet.

Best!