Allow control of the default environment name

[stuartleeks]

As per the marketplace instructions,

The environment will affect the Dockerfile that is used during build. If you select Debug, the build task will search for Dockerfile, otherwise it will search for Dockerfile.<environment>.

It would be really helpful to be able to specify which environment is default. E.g. if I set release to the default environment then when the environment is set to release it would use Dockerfile, and for any other environment it would use Dockerfile.

The default value for the default environment could be "debug" to preserve existing behaviour unless someone explicitly changes it

[giggio]

@stuartleeks Right now Debug is the default. What would you like to see changed?

[stuartleeks]

I'd like to be able to customise the default value :-)

E.g. I'd like to be able to have the Release environment use Dockerfile, and the Debug environment user Dockerfile.debug

Does that make sense?

[giggio]

Yes, it does. The reason I did not do that, is that the syntax highlighting (and other tools support) usually stops working with the .debug or .release extension. I saw you send a PR, I will check it out now.

[stuartleeks]

I use Visual Studio Code for a lot of Dockerfile editing and it is well-behaved with Dockerfile.something filenames, so I just assumed others were too :-)