Should we use libcompose project.Context{} instead of docker.Context{}?

[weitenghuang]

I may miss something, but I don't understand why we will need to use &docker.Context{} when we load compose file in loader pkg
Isn't project.Context{} sufficient? The difference are:

    ClientFactory client.Factory
    ConfigDir     string
    ConfigFile    *configfile.ConfigFile
    AuthLookup    auth.Lookup

[surajssd]

I think we had discussion on similar lines at #67 (comment) and #67 (comment) please correct me if I got you all wrong?

[weitenghuang]

I propose we use project.Context for the same reason you referred in #67 (comment). We don't need to use libcompose's docker pkg context, if kompose is not meant to build a docker client.
Both support EnvironmentLookup.
Furthermore, I will help to resolve libcompose #372, so we don't need to copy the code here as well.

[ngtuna]

+1 @weitenghuang. I made a PR for that. Once your PR solving docker/libcompose#372 get in, we can remove the copied code.