[ECS/Fargate][bug]: Dockerfile healthcheck is ignored

[paya-cz]

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Tell us about your request

Using HEALTHCHECK instruction in Dockerfile is ignored by Fargate. The health status does not appear in the AWS Console, and the task will not get killed even if I make the healthcheck always fail. If I however setup the healthcheck in the task definition, it works fine and health status appears in the console as well.

Which service(s) is this request for?
Fargate

Are you currently working around this issue?

Duplicating healthcheck instruction via AWS CDK / Console does the trick.

Additional context
I use node.js v14, docker, and healthcheck process written in node.

[joebowbeer]

There is a lot of discussion about Dockferfile HEALTHCHECK in AWS container issues.

Note that the HEALTHCHECK was added to Dockerfile for Docker Swarm, relatively recently.

I think the EKS (Kubernetes) approach to this is the most maintainable:

https://stackoverflow.com/q/41475088/901597

Since Kubernetes 1.8, the Docker HEALTHCHECK has been disabled explicitly in Kubernetes.

I find that HEALTHCHECK depends a lot on deployment, so as a rule I do not add HEALTHCHECK to Dockerfile, but instead I add it to docker-compose, ECS taskdef, and EKS Deployment, as needed.

[paya-cz]

Closed, dupe of #1041