Missing health check statement in dockerfile

[shatovilya]

To add a healthcheck to a Dockerfile, you can use the HEALTHCHECK statement. This instruction allows you to define a command that will check the state of the container. In your case, you can add a healthcheck that will check if the Kafka exporter metrics are available on port 9308.

[eero-t]

The current version check for 3.0.0+ fails to handle cases where protoc is above version 3.0.0 but does not start with a 3, for example protoc may have a version of 28.1.

To fix this use AX_COMPARE_VERSION to properly compare the version.

Will protoc v3 assumptions work if actual protoc version is much higher? (I've never used protoc myself)

@mrunge any comments?

[jameshilliard]

Will protoc v3 assumptions work if actual protoc version is much higher? (I've never used protoc myself)

I think so, the versioning scheme changed to use much higher numbers or something but it seems compatible with the normal assumptions regarding the version being greater than 3.