Log excerpt:
2023-11-15 07:31:18.955 UTC [1] LOG: invalid value for parameter "lc_monetary": "en_US.utf8" 2023-11-15 07:31:18.956 UTC [1] LOG: invalid value for parameter "lc_numeric": "en_US.utf8" 2023-11-15 07:31:18.956 UTC [1] LOG: invalid value for parameter "lc_time": "en_US.utf8" 2023-11-15 07:31:18.956 UTC [1] FATAL: configuration file "/var/lib/postgresql/data/postgresql.conf" contains errors PostgreSQL Database directory appears to contain a database; Skipping initialization
Fix locales
docker exec -it -u 0 FW_PostgreSQL /bin/bash dpkg-reconfigure locales
Pick the correct locale (en_US.UTF-8)