Find Postgres Version in Docker container
Using docker
lonewanderer@debian:~sudo docker exec -it <CONTAINER_NAME> postgres -VUsing docker compose
lonewanderer@debian:~ sudo docker compose exec -t db postgres -V
db is the name of your container as defined in your docker-compose.yml file.
Output
The output will look somthing like this:
postgres (PostgreSQL) 16.1 (Debian 16.1-1.pgdg120+1)