Handy Docker things

gistfile1.txt

docker save <image name> | ssh user@host 'docker load'

docker images | egrep "^<none>" | nawk '{ print $3 } ' | xargs docker rmi

docker system prune
# more: https://www.heavymetalcoder.com/shrink-your-virtual-hard-drive-file-in-docker-for-macos/
docker volume rm $(docker volume ls -qf dangling=true)

## OSX remove VM Disk since it doesn't auto-shrink
```
docker rm $(docker ps -a -q)
docker rmi $(docker images -q)
docker volume rm $(docker volume ls |awk '{print $2}')
rm -rf ~/Library/Containers/com.docker.docker/Data/*
```

# TODO clean this up:
richo@richo-lappy:~$ cat /etc/systemd/system/docker.service.d/richo.conf 
[Service]
ExecStart=
ExecStart=/usr/bin/dockerd -H tcp://127.0.0.1:2375 -H fd://

# init.d:
echo 'DOCKER_OPTS="--dns 10.72.4.130 -H tcp://127.0.0.1:2375"' > /etc/default/docker

# systemd:
#make sure /etc/systemd/system/docker.service.d exists otherwise use mkdir to create it
printf "[Service]\nExecStart=\nExecStart=/usr/bin/docker daemon  -H tcp://127.0.0.1:2375 -H fd:// \n" > /etc/systemd/system/docker.service.d/docker.conf


# Mac connect to docker VM
screen ~/Library/Containers/com.docker.docker/Data/com.docker.driver.amd64-linux/tty