CHG: TRAgen pretty official release with GUI, nice reports, tools

The previous "official release" (commit f54ce22b....) is hopefully
functionally the same but with warnings, tools hidden in the 'cells'
folder, old CMakeLists.txt with no modularization (to enable tools,
virtual microscopy, etc.)
3 jobs for nice_TRAgen_Release in 47 seconds
latest Auto DevOps
Name Stage Failure
build Build
Checking out d8dba2b6 as nice_TRAgen_Release...

Skipping Git submodules setup
$ if [[ -z "$CI_COMMIT_TAG" ]]; then # collapsed multi-line command
$ /build/
Logging to GitLab Container Registry with CI credentials...
WARNING! Using --password via the CLI is insecure. Use --password-stdin.
error during connect: Post http://docker:2375/v1.40/auth: dial tcp: lookup docker on no such host
ERROR: Job failed: exit code 1