Macaron docker breaks in CI with default entry point

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Executing "step_script" stage of the job script
00:00
Using docker image sha256:e90e8ba0[18](https://gitlab.com/committed-consulting/mde-devops/macaron-example/-/jobs/4555123889#L18)ae4bbbc6cfcde6518561bce7aa040[19](https://gitlab.com/committed-consulting/mde-devops/macaron-example/-/jobs/4555123889#L19)a05df976b9a28217f64321c for ghcr.io/oracle/macaron:latest with digest ghcr.io/oracle/macaron@sha256:5e1c888e45d14f5b1d396f493b457e88a4385aaf09c39a0edf92754f06b8983c ...
Cannot find the GID and UID of the host machine's user. The output files generated could not be modifiable from the host machine.
Consider providing the GID and UID via the env variables USER_GID and USER_UID respectively.
bash: -c: line 1: syntax error near unexpected token `then'
bash: -c: line 1: `cd /home/macaron && . .venv/bin/activate && sh -c if [ -x /usr/local/bin/bash ]; then'

Seems this is due to a broken expansion of ${MACARON_PARAMS[*]}.

COMMAND="cd /home/macaron && . .venv/bin/activate && ${MACARON_PARAMS[*]}"

It is this issue

And this from the doco:

The runner expects that the image has no entrypoint or that the entrypoint is prepared to start a shell command.
(Emphasis me)

The following works in Gitlab ci, but is not pretty. Note that you will need to set the GITHUB_TOKEN in the environment variables of the run.

run_macaron:
    stage: build
    image:
      name: ghcr.io/oracle/macaron:latest
      entrypoint: [""]
    script:
      - /bin/bash /home/macaron/user.sh macaron analyze -rp https://github.com/micronaut-projects/micronaut-core -b 4.0.x -d 82d115b4901d10226552ac67b0a10978cd5bc603

Start with docker/user.sh around line 47 and compare the linked GitLab CI failure with the documented entrypoint behavior. Reproduce the default-entrypoint invocation in GitLab CI, then verify that the command is passed to the shell without the syntax error and that the explicit entrypoint override remains unnecessary.