Make action fully equivalent to the okteto build command

[teresaromero]

Resolves https://github.com/okteto/app/issues/6884

In order to make the action fully equivalent to the okteto build command here are the following changes:

• recover at entrypoint.sh the inputs documented at action.yml: tag,path and buildargs
• remove unused global from both entrypoint.sh and action.yml. Users can push to global registry by specific tag.
• include additional options no-cache, cache-from, export-cache, secret to be able to used them at the action
• review Readme and add more examples of use

Tests done

Used repository https://github.com/okteto/go-getting-started and https://github.com/okteto/movies-with-helm to have both monorepo and single repo

As entrypoint.sh is a script, locally simulating the input from the action with running the script with arguments

• Build single service not included at Okteto Manifest ./entrypoint.sh "myapp:dev" "Dockerfile" "."
• Build single service included at Okteto Manifest ./entrypoint.sh "" "" "myapp"
• Build all services included at Okteto Manifest ./entrypoint.sh "" "" ""

[jLopezbarb]

Maybe we should include an action test for a Dockerfile in okteto/okteto repo

[andreafalzetti]

If we remove global we may break existing workflows, should we release this as a breaking change?

[teresaromero]

global param is deprecated, the CLI does not use it. i think what should be done is to file an issue to remove this from the options available at CLI.

[teresaromero]

Maybe we should include an action test for a Dockerfile in okteto/okteto repo

I was reviewing and this https://github.com/okteto/okteto/blob/master/integration/actions/build_test.go#L71 is already in place. Are you referring to other kind of tests?

I was thinking about adding some sh script test, do you think there is some tool we could benefit from?