Docker Compose

Environment Variables and Secrets

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LearnStep 1 of 4

Environment Variables in Compose

Learning Objectives

•Manage environment variables
•Handle secrets securely
•Use .env files

Lesson Outline

LearnStep 1/4

Environment Variables in Compose

Working with Environment Variables

Methods to Set Environment Variables

1. Direct in Compose File

yaml

2. List Format

yaml

3. From .env File

yaml

4. From Host Environment

yaml

.env File Format

bash

Variable Substitution

yaml

bash