Docker container stop by image name

 Stop docker container by image name:

imagename='mydockerimage'
docker stop $(docker ps | awk '{split($2,image,":"); print $1, image[1]}' | awk -v image=$imagename '$2 == image {print $1}')

Stop docker container by image name and tag:

imagename='mydockerimage:latest'
docker stop $(docker ps | awk -v image=$imagename '$2 == image {print $1}')