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Chapter 5. Extending Existing Container Images
To extend a functionality of a container image provided by Red Hat:
- Set environment variables or use OpenShift secrets.
- If the desired changes cannot be achieved that way, build a new container on top of the provided container image. Write a custom Dockerfile and use the original container in the FROM clause. See the example described in the Knowledgebase article How to Extend the rhscl/mariadb-101-rhel7 Container Image.
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