Unable to run on k8s with readOnlyRootFilesystem: true

[PaulieMac]

This line and this line apparently make it impossible to run on k8s with readOnlyRootFilesystem: true

It would be better if the templates were in a different dir (perhaps a parent) so we can mount a writable dir at the target site; as-is, this forces a less-secure deployment.

I am thinking that instead of this

dub template "/etc/ksqldb/ksqldb-server.properties.template" "/etc/ksqldb/ksqldb-server.properties"

maybe something like this?

dub template "/etc/ksqldb/ksqldb-server.properties.template" "/etc/ksqldb/config/ksqldb-server.properties"

[ricardo-aires]

Under the impression that every Confluent Docker Image makes the starting point at /etc/confluent/docker/.

[im-pratham]

check is this PR solves your issue https://github.com/confluentinc/ksql-images/pull/83/files.
I fixed of openshift. But same will be applicable to you