Smaller docker build

1 job for master in 53 seconds (queued for 11 seconds)
Name Stage Failure
failed
build ws-dataselect Build
STEP 5: FROM python:3.9-slim
error building at STEP "RUN pip3 install --no-cache-dir -r /requirements.txt": error while running runtime: exit status 1
Running after_script
Running after script...
$ $REGISTRY_LOGOUT $CI_REGISTRY
Removed login credentials for gricad-registry.univ-grenoble-alpes.fr
Uploading artifacts for failed job
Authenticating with credentials from /root/.docker/config.json
ERROR: Job failed: exit code 1