Docker notes

Useful links

• docker-cheat-sheet
• Networking 101
• Creating a Nginx container step-by-step
• Debugging: https://stackoverflow.com/questions/26220957/how-can-i-inspect-the-file-system-of-a-failed-docker-build

Storage:

• Docker files system alternatives: union file system alternatives.
• Installing Docker on CentOS with btrfs
• Cassandra on Docker: use volume mounts.
• Docker data volumes: for shared/faster access to data.
• Volumes easily explained

Dockerfile samples:

• CentOS, Oracle Java and Tomcat
• CentOS, Java, Maven, Tomcat and Nginx

Docker UI:

• Docker UI. deploy as a single container. No console.
• Simple Docker UI; Chrome based. 
• Shipyard, Panamax: more than a simple UI (multi-node, registry, etc).
• There are other for composites.

Commands

Download a pre-built image:

  docker pull centos

List local images:

  docker images

List running containers:

  docker ps

List all containers:

  docker ps -a

Remove all non running containers:

    docker rm $(docker ps -q -f status=exited)

Remove all containers:

    docker rm $(docker ps -a -q)

Remove all local images:

   docker rmi $(docker images -q)

Commit a local image:

  docker commit -m "Oracle JDK 8"  25e928f29d5e centos71-java8:v1

CentOS Service

  systemctl restart docker.service
  systemctl status docker.service