MAINT: Debian 12 in pipeline

.docker/Dockerfile

-FROM debian:11
+FROM debian:12
 RUN apt-get update && \
     apt-get install \
-    curl \
-    pkgconf \
     python3 \
     python3-pip \
     tox \
     git \
-    openjdk-11-jdk-headless \
     -y
 
 
 COPY .docker/wait-for-it.sh /wait-for-it.sh
 ADD https://gitlab.com/api/v4/projects/13656973/repository/branches/dev \
   pylib_version.json
-RUN pip install -U pip
-RUN git clone --depth 1 --branch dev https://gitlab.com/caosdb/caosdb-pylib.git && \
-   cd caosdb-pylib && pip install -U .
+RUN pip install --break-system-packages -U pip
+RUN pip install --break-system-packages -U git+https://gitlab.indiscale.com/caosdb/src/caosdb-pylib.git@dev
 # At least recommonmark 0.6 required.
 # RUN pip install -U html2text pycodestyle pylint recommonmark sphinx-rtd-theme gitignore-parser
 COPY . /git
 RUN rm -r /git/.git \
     && mv /git/.docker/pycaosdb.ini /git/integrationtests
-RUN cd /git && pip install -U .[all]
+RUN cd /git && pip install --break-system-packages -U .[all]
 WORKDIR /git/integrationtests
 CMD /wait-for-it.sh caosdb-server:10443 -t 500 -- ./test.sh --force

.gitlab-ci.yml

@@ -123,14 +123,14 @@ linting:
       - make lint
   allow_failure: true
 
-unittest_py39:
+unittest_py311:
   tags: [docker]
   stage: unittest
   image: $CI_REGISTRY_IMAGE
   needs: [build-testenv]
   script:
-    # First verify that system Python actually is 3.9
-    - python3 -c "import sys; assert sys.version.startswith('3.9')"
+    # First verify that system Python actually is 3.11
+    - python3 -c "import sys; assert sys.version.startswith('3.11')"
     - python3 -c "import linkahead; print('LinkAhead Version:', linkahead.__version__)"
     - tox
 
@@ -139,20 +139,20 @@ unittest_py38:
   stage: unittest
   image: python:3.8
   script: &python_test_script
-    - pip install git+https://gitlab.indiscale.com/caosdb/src/caosdb-pylib.git@dev
-    - pip install .[all]
+    - pip install --break-system-packages git+https://gitlab.indiscale.com/caosdb/src/caosdb-pylib.git@dev
+    - pip install --break-system-packages .[all]
     - pytest --cov=caosadvancedtools unittests
 
-unittest_py310:
+unittest_py39:
   tags: [docker]
   stage: unittest
-  image: python:3.10
+  image: python:3.9
   script: *python_test_script
 
-unittest_py311:
+unittest_py310:
   tags: [docker]
   stage: unittest
-  image: python:3.11
+  image: python:3.10
   script: *python_test_script
 
 unittest_py312: