Docker Tutorial — Environment & Configuration
This chapter covers environment & configuration in Docker.
What’s in this Chapter?
| # | Topic | Description |
|---|---|---|
| 1 | Environment Variables in Docker | ENV in a Dockerfile sets variables at build time and runti… |
| 2 | .env Files | Use --env-file .env to load variables from a file. This ke… |
| 3 | ARG vs ENV | ARG is available only during build. ENV persists into th… |
| 4 | Secrets Management | Never put secrets in ENV or Dockerfile instructions — they… |
| 5 | Twelve-Factor Configuration | The Twelve-Factor App methodology recommends storing config … |
| 6 | Practice Exercises | Hands-on labs and questions |
What You’ll Be Able to Do After This Chapter
- Understand and apply all concepts in environment & configuration
- Use related Docker commands confidently
- Follow best practices for production use
- Complete hands-on exercises
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