Docker composer vs Enviroment

[evanasc]

The https://raw.githubusercontent.com/nilsteampassnet/TeamPass/master/docker/docker-compose/docker-compose.yml mentions the latest release (3.1.6.12 - would she be?), but https://raw.githubusercontent.com/nilsteampassnet/TeamPass/master/docker/docker-compose/.env.example refers to version 3.1.5.2.

# ============================================
# TeamPass Docker Environment Configuration
# ============================================

# ----------------------------------------
# Version
# ----------------------------------------
TEAMPASS_VERSION=3.1.5.2
MARIADB_VERSION=11.2

root@l# docker-compose up -d
Creating network "virtual_teampass-network" with driver "bridge"
Creating volume "virtual_teampass-sk" with local driver
Creating volume "virtual_teampass-files" with local driver
Creating volume "virtual_teampass-upload" with local driver
Creating volume "virtual_teampass-db" with local driver
Pulling db (mariadb:11.2)...
11.2: Pulling from library/mariadb
9cb31e2e37ea: Pull complete
a836abdcb086: Pull complete
1bdab347f7fc: Pull complete
5913b062fb0b: Pull complete
9ae6d3aac01a: Pull complete
f334c8f49d25: Pull complete
2cb9e1daf0db: Pull complete
6c9e7054b136: Pull complete
Digest: sha256:ff87d49107a1e4878c63c3a3132bfdf628e6732879b8e4ceb72e041206d3aece
Status: Downloaded newer image for mariadb:11.2
Pulling teampass (teampass/teampass:3.1.5.2)...
ERROR: manifest for teampass/teampass:3.1.5.2 not found: manifest unknown: manifest unknown

Which one to use?