Link environment variables reference Note: Environment variables are no longer the recommended method for connecting to linked services. Instead, you should use the link name (by default, the name of the linked service) as the hostname to connect to. See the docker-compose.yml documentation for details. Environment variables will only be populated if you’re using the legacy version 1 Compose file format. Compose uses Docker links to expose services’ containers to one another. Each linked cont

ps Usage: ps [options] [SERVICE...] Options: -q Only display IDs Lists containers.

Example: Manual install on cloud provider You can install Docker Engine directly to servers you have on cloud providers. This example shows how to create an Amazon Web Services (AWS) EC2 instance, and install Docker Engine on it. You can use this same general approach to create Dockerized hosts on other cloud providers. Step 1. Sign up for AWS If you are not already an AWS user, sign up for AWS to create an account and get root access to EC2 cloud computers. If you have an Amazon account, you