Debugging a Docker image

Start up the Docker container from image:

docker run --entrypoint "/bin/bash" --rm imagename:latest -c "sleep 24h"

Obtain the container hash id:

docker ps

Log into the running container

docker exec -ti containerid bash

Output logs of the container

docker logs -f containerid

Docker Prune All Untagged Images ("none")

docker rmi -f $(docker images -f "dangling=true" -q)