• Ubuntu
  • https://github.com/yenbohuang/shellscripts/blob/master/docker/install-docker-ce-ubuntu.sh
  • https://docs.docker.com/install/linux/docker-ce/ubuntu/
• CentOS
  • Always use the latest CentOS version; it has less issues.
  • https://github.com/yenbohuang/shellscripts/blob/master/docker/install-docker-ce-centos8.sh
  • https://docs.docker.com/engine/install/centos/
  • https://linuxconfig.org/how-to-install-docker-in-rhel-8
• Post install steps
  • https://docs.docker.com/install/linux/linux-postinstall/

These blog posts (from part 1 to 4) introduce about how to use "Docker + Consul + Swarm + Registrator + Nginx" for blue-green deployment:

• https://technologyconversations.com/2015/07/02/scaling-to-infinity-with-docker-swarm-docker-compose-and-consul-part-14-a-taste-of-what-is-to-come/
• https://technologyconversations.com/2015/07/02/scaling-to-infinity-with-docker-swarm-docker-compose-and-consul-part-24-manually-deploying-services/
• https://technologyconversations.com/2015/07/02/scaling-to-infinity-with-docker-swarm-docker-compose-and-consul-part-34-blue-green-deployment-automation-and-self-healing-procedure/
• https://technologyconversations.com/2015/07/02/scaling-to-infinity-with-docker-swarm-docker-compose-and-consul-part-44-scaling-individual-services/

See if this command works.

docker run hello-world

See details on https://docs.docker.com/linux/step_one/

docker run [OPTIONS] IMAGE [COMMAND] [ARG...]

docker images

See details on https://docs.docker.com/linux/step_three/

docker ps 

See details on https://docs.docker.com/engine/tutorials/dockerizing/

#!/bin/sh
while [ 1=1 ]
do
  clear
  docker images | grep -v none
  docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Command}}\t{{.RunningFor}}\t{{.Status}}"
  echo "Refreshed every 5 seconds....$(date)"
  sleep 5
done

See details on https://docs.docker.com/engine/reference/commandline/ps/

docker logs -f <container name>

See details on https://docs.docker.com/engine/tutorials/dockerizing/

docker top <container name>

See details on https://docs.docker.com/engine/tutorials/usingdocker/

docker inspect <container name>

See details on https://docs.docker.com/engine/tutorials/usingdocker/

docker exec -it <container name> /bin/sh

See details on https://docs.docker.com/engine/tutorials/networkingcontainers/

docker stop <container name>

See details on https://docs.docker.com/engine/tutorials/usingdocker/

docker kill $(docker ps -aq)

docker rm $(docker ps -aq)

docker rmi -f $(docker images -aq)

• Get container ID by the following command:

docker container ls -l

• Export to tarball

docker export <container iD> -o my.tar

• Run Nexus on Windows
  • https://help.sonatype.com/repomanager3/formats/docker-registry/proxy-repository-for-docker
  • Remember
    • Change "HTTP port" in docker group repo proxy config.
    • Use "https://registry-1.docker.io" as URL.
    • Enable V1 API protocol.
    • Use "Docker Hub" as index.
• Modify /etc/docker/daemon.json
  • https://docs.docker.com/registry/insecure/
  • I don't know how to make it work with hostname, use IP address for now.

{
  "insecure-registries" : ["<Nexus IP>:<Nexus Port>"]
}

• You must restart docker engine to pick up config.

sudo service docker restart

• Login docker
  • Remember adding port number, or CLI will use 443 (default) port number.

docker login <Nexus IP>:<Nexus port>

• See of it works

docker run <Nexus IP>:<Nexus Port>/hello-world

• Remember adding "gitlab" in front of "gitlab-ce" because it's tag name is "gitlab/gitlab-ce"

docker pull <Nexus IP>:<Nexus Port>/gitlab/gitlab-ce 

• TODO: Fix this issue later

WARNING! Your password will be stored unencrypted in /home/yenbohuang/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login docker hub by docker login command and run the following:

docker scan <image name>

• https://www.docker.com/blog/bringing-docker-scan-to-linux/
• https://docs.docker.com/engine/scan/