Docker image optimization

Co tenhle MR dělá? / What does this MR do?

Changed

• Docker image optimization

Before

REPOSITORY                                TAG                        IMAGE ID       CREATED         SIZE
api-keys                                  latest                     ef102e1d2eef   3 minutes ago   335MB

After

REPOSITORY                                TAG                        IMAGE ID       CREATED          SIZE
api-keys                                  latest                     365eae9e435f   6 seconds ago    135MB

Související issues / Related issues

https://gitlab.com/operator-ict/golemio/code/modules/core/-/issues/54+

Vývojářův kontrolní seznam / Developer checklist

• Ensure this change works
• Write unit tests for this change as needed
• Update the OpenAPI document if exists
• Ensure CI/CD pipeline passes
• Create or update the implementation documentation if necessary
• Include a changelog entry
• Request a review

Recenzentův kontrolní seznam / Reviewer checklist

• Ensure this change follows CODING-GUIDELINES and CONTRIBUTING
• Ensure this change follows the Golemio/OICT architecture
• Ensure this change does not add unnecessary dependencies (e.g. lodash)
• The changelog is updated
• The implementation documentation is created or updated if necessary
• The OpenAPI document is updated if exists