CI/CD pipeline to build on main commit and publish to PyPI on release 12

.gitlab-ci.yml

 default:
-  image: 
-    name: python:3.11
-    entrypoint: ["/bin/bash -c"]
-
+  # image: python:3.11
   cache:
     paths:
       - .pip-cache/
   before_script:
     - python3 --version
-    - pip3 install --upgrade pip
-    - pip3 install build twine
+    - curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
+    - python3 get-pip.py --user
+    - pip install --upgrade pip
+    - pip install build twine
 
 stages:
   - build