Docker Container Best Practices
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External
- https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux_atomic_host/7/html/getting_started_with_containers/get_started_with_docker_formatted_container_images#creating_docker_images
- https://docs.docker.com/develop/dev-best-practices/
- https://medium.com/@nagarwal/best-practices-for-working-with-dockerfiles-fb2d22b78186
- http://docs.projectatomic.io/container-best-practices/
- https://containerjournal.com/2016/03/21/5-docker-best-practices-follow/
- https://it.artindustrial.com/2017/09/20/10-best-practices-for-creating-good-docker-images/
- https://developers.redhat.com/blog/2016/02/24/10-things-to-avoid-in-docker-containers
Internal
Overview
Reference
- Docker.com Dockerfile best practices: https://docs.docker.com/engine/userguide/eng-image/dockerfile_best-practices
Document Images
- Logging
- Metrics
- Storage
- Operations
- Upgrades
Java in a Container
Fail Early
Check the environment configuration and fail early in the ENTRYPOINT script:
#
# check the environment and fail early, when the container executed for the first time
#
/opt/dsmanager/bin/dsmanager check-configuration || { echo "dsmanager configuration error" 1>&2; exit 1; }
/opt/dsmanager/bin/dsmanager check-configuration must exit with a non-zero value if the configuration fails.