I have a gitlab pipeline split in two jobs but unfortunately the second job complains /bin/sh: eval: pip: not found.

Below is the .gitlab-ci.yml file.

stages:
  - build
  - test

default:
  image: docker:24.0
  
build_image:
  stage: build
  script:
    - docker build .

test:
  stage: test
  script:
    - pip install .[dev]
    - pytest

The build_image job is doing a build on my Dockerfile but despite that the next job does not find pip. The contents of the Dockerfile looks as follows:

FROM python:3.12-slim
WORKDIR /usr/src/template_repository
COPY ./requirements.txt .
RUN apt-get update
RUN pip install --upgrade pip
RUN pip install -r requirements.txt

How can I get the test job to find pip and install all the requirements?