The XDEBUG variables defined in the docker-compose.yml file command
blocks were not used under docker 20.10.24+dfsg1
with docker compose version v2.29.2.

This led to the problem that Bootstrap::init took 37 seconds,
wasting developer time.

By switching to "export" calls, the variables get set properly
and php/xdebug runs fast. A single functional test run is 3 seconds now.

based on the files in Tests/Functional/Bucketfiles/

Created with the Build/testing-docker/prepare-minio-data.sh

Committed here so that "mc" (minio client) is not needed
to run the tests.

./Build/Scripts/runTests.sh -p 8.2 -d sqlite -s functional -e "--display-warnings --display-notices --display-errors"

We use a local minio instance to run the tests against.

Run them with
./Build/Scripts/runTests.sh -p 8.2 -d sqlite -s functional -e "--display-warnings --display-notices --display-errors"

- amend commit to trigger build

ubuntu-20.04 brings an error:
> Run Build/Scripts/runTests.sh -p 8.0 -s composerInstall
> Build/Scripts/runTests.sh: line 107: type: docker-compose: not found
> This script relies on docker and docker-compose. Please install

.. typo3/testing-framework 8 needs a higher version