Lock UV to a specific version. Add documentation

CONTRIBUTING

@@ -9,6 +9,10 @@ If you would like to contribute to this project, please follow these steps:
 5. Push to the branch (`git push origin feature/branch-name`)
 6. Create a Pull Request
 
+## Testing
+
+To run tests locally, just run the script `ci/run_testsuite_and_record_V2.sh` from anywhere. The only prerequisite is a working installation of docker or podman.
+
 ## Publishing
 
 Publishing new versions is automatically handled by GitHub actions for versions tagged with `x.y.z[.prerelease]` (`1.2.3`, `1.2.3.rc1`, etc.). If you are a maintainer, you can create a new release by following these steps:

ci/Dockerfile

@@ -4,7 +4,7 @@ ARG python_version=3.12
 
 RUN apt-get -qq update
 RUN apt-get -y install curl git >/dev/null
-RUN curl -LsSf https://astral.sh/uv/install.sh | sh
+RUN curl -LsSf https://astral.sh/uv/0.5.6/install.sh | sh
 RUN /root/.local/bin/uv self update -q
 RUN /root/.local/bin/uv python install ${python_version}
 COPY . /build