chore: Add ci-migration.sh to Dockerfile (#2767)

# Description

Please include a summary of the changes and the related issue. Please
also include relevant motivation and context.

## Checklist before requesting a review

Please delete options that are not relevant.

- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented hard-to-understand areas
- [ ] I have ideally added tests that prove my fix is effective or that
my feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged

## Screenshots (if appropriate):

backend/Dockerfile

@@ -68,6 +68,8 @@ COPY api/quivr_api /code/api/quivr_api
 
 COPY ./pyproject.toml ./poetry.lock* /code/
 
+COPY ./ci-migration.sh /code/
+
 # Run install
 RUN poetry install --no-root  && \
     playwright install --with-deps && \