CWG-75: Secure jobs with secrets and raise awareness

Closes CWG-75

{{cookiecutter.project_slug}}/docker/ci-runner/Dockerfile

@@ -2,3 +2,4 @@ FROM python:3.11
 
 RUN python -m pip install --upgrade pip
 RUN pip install --upgrade tox twine cibuildwheel==2.13.1
+RUN curl -sSL https://get.docker.com/ | sh