Docker (CE) is ideal for developers and small teams looking to get started with Docker and experimenting with container-based apps. Includes Container engine and built in orchestration, networking, security. Use this command to restart the service: sudo systemctl restart docker.
Docker is an open platform for developing, shipping, and running applications. Docker enables you to separate your applications from your infrastructure so you can deliver software quickly. With Docker, you can manage your infrastructure in the same ways you manage your applications. By taking advantage of Docker’s methodologies for shipping, testing, and deploying code quickly, you can significantly reduce the delay between writing code and running it in production.
2) Connect to virtual machine using following SSH credentials:
Hostname: PublicDNS / IP of machine
Port : 22
Username: Your chosen username when you created the machine ( For example: Azureuser) Password : Your Chosen Password when you created the machine ( How to reset the password if you do not remember)
Step 2) Other Information:
1.Default ports:
Linux Machines: SSH Port – 22
2. To access Webmin interface for management please follow this link Configure custom inbound and outbound rules using this link
2) Connect to the virtual machine using SSH key Refer this link:
Hostname: PublicDNS / IP of machine
Port : 22
Google
Step 1) VM Creation:
Click the Launch on Compute Engine button to choose the hardware and network settings.
2. You can see at this page, overview of Cognosys Image as well as some estimated costs of VM. 3.In the settings page, you can choose the number of CPUs and amount of RAM, the disk size and type, etc.
Use this command to restart the service: sudo systemctl restart docker.
docker run – Runs a command in a new container. docker start – Starts one or more stopped containers. docker stop – Stops one or more running containers. docker build – Builds an image form a Docker file. docker pull – Pulls an image or a repository from a registry.
2. You can see at this page, overview of Cognosys Image as well as some estimated costs of VM. 
3.In the settings page, you can choose the number of CPUs and amount of RAM, the disk size and type, etc. 
