Learn Docker
"Learn Docker" is is a step by step hands-on guide which gives some practical Docker-related examples
Labs
The repository gives a number of folders which proides all files required for a Lab. The lab are structured as follows:
| Lab | Description |
|---|---|
| Lab 0 | Creating lab environment (please see below in this document) |
| Lab 1 | Docker installation |
| Lab 2 | Docker basic configuration |
| Lab 3 | Getting help |
| Lab 4 | Manaing images |
| Lab 5 | Managing containers |
| Lab 6 | Using environment variables |
| Lab 7 | Using persistent storage |
| Lab 8 | Starting multicontainer applications |
| Lab 9 | Starting private registry |
| Lab 10 | Creating new images by docker commit |
| Lab 11 | Creating a simple Dockerfile |
| Lab 12 | Importing and exporting images |
| Lab 13 | Advanced Dockerfile |
| Lab 14 | Containerizing Jboss EAP |
Creating lab environment
Most of the labs can be run on any Linux based VMs. However all labs are created and tested on CentOS 7 only.
Virtual Machine
The repsitory includes a Vagrantfile which deploys a VM with the following configuration option:
| Option | Value |
|---|---|
| RAM | 4096M |
| vCPU | 2 |
| IP | 172.24.0.11 |
| Hostname | node1.172.24.0.11.nip.io |
| Box | centos/7 |
Additional configuration
The VM is customized as follows:
- docker and git packages are installed
- docker Linux groups is created
- the vagrant user is a member of the docker Linux group (this allows to use Docker client under unprivileges user)
Host machine requrements
The host machine can be configured on the following OS:
- MacOS
- Windows
- Fedora Linux
- CentOS 7
The following software is required:
- VirtualBox(Windows and MacOS)
- libvirt(Linux only)
- Vagrant
- git
- vim
Starting lab environment
The lab environment can be provisioned using Vagrant as follows:
git clone https://github.com/li9com/learn-docker.git
cd learn-docker
vagrant up
Connecting to Lab VM
Once VM is provisioned, you may connect to VM using SSH as follows:
vagrant ssh
Note! You will be connected as the "vagrant" user which is allowed to use sudo to run commands under the root account:
sudo yum install -y epel-release
Authors
Artemii Kropachev