To search for an image to download:

doas docker search imagename

To install such image:

doas docker pull image

To view your images:

doas docker images

To view your containers:

doas docker containers ls -a

To show running containers, you can also input:

doas docker ps
Creating containers usually has specific commands, but always starts with docker run:

Example (installing mariadb):

docker run --name maraidbtest -e MYSQL_ROOT_PASSWORD=mypass -p 3306:3306 -d docker.io/library/mariadb

Starting/Stopping/Restarting containers

doas docker start imagename
doas docker stop imagename
doas docker restart imagename

Pausing/unpausing containers

docker pause containerid
docker unpause contaienrid

Checking container logs:

docker logs imagename

Accessing the container (dependent on type of container):

doas docker attach containerid
doas docker exec -it mariadbtest bash

Removing images/containers (stop image first):

doas docker rmi imagename

doas docker container rm containerid

SIDE NOTE ON MARIADB:  Mariadb container is just a debian container, and can be updated using apt, etc.

https://mariadb.com/kb/en/installing-and-using-mariadb-via-docker/