Dyn 3117 fix docker cp (Staging-branch)

[RobertGlobant20]

Purpose

The DynamoPrimer job was failing due that the docker cp command was not recognizing the container name stored in a env variable, then I updated all the places inside the CopyLibrariesToHostScript in which the docker cp command is using the env variable to correctly get the container name.

Declarations

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Check these if you believe they are true

• [X] The codebase is in a better state after this PR
• [X] Is documented according to the standards
• [X] The level of testing this PR includes is appropriate
• [ ] User facing strings, if any, are extracted into *.resx files
• [ ] All tests pass using the self-service CI.
• [ ] Snapshot of UI changes, if any.
• [ ] Changes to the API follow Semantic Versioning and are documented in the API Changes document.

Reviewers

@QilongTang

FYIs

@alfredo-pozo