Part I
Containers are environments that host individual applications using a framework like Docker.
Docker Editions:
- Docker CE ( community edition ) free version
- Docker EE ( enterprise edition) Paid
Versions:
- Stable, released every 4 months.
- Edge (beta) released every month. For testing
- EE, support for one year.
Example how to create a container:
$docker container run --publish 80:80 --detach --name webhost nginx
detach: subcommand is to let run the container and keep use the command prompt name: create a container’s name.
$docker container logs “container-name”
Now you’ve got your Docker machines running, Docker Hub repository set up, and Docker Image built, you are ready to deploy the app across your machines. First, push your application to your repository. You’ll find the docker login and docker push commands useful here. Next, pull your application from your repository to your other machines. You can do all of this with the docker run command. It will automatically find, pull, and run your new application.
That’s it! Those are the steps to use Docker to easily deploy an application to multiple machines.
Some useful commands:
$docker ps -a -q | xargs docker rm -v
To delete all container stopped
$docker container ls
Show current running containers
$docker exec -it <containerIdOrName> bash
NOTE:
Remember the docker port publishing format of
Moreover the official website: Docker Samples