Change our Docker base image

[markfarkas-camunda]

Low prio

What should we do?

We should change out docker base image to 21.0.2_13-jre-alpine We can take a look at how web-modeler team does it.

Why should we do it?

To have a slimmer docker image, which seems to have less vulnerabilities.

Why don't we have this already?

We get #10 0.281 /bin/sh: useradd: not found error when trying to build the image, so user management adjustments are necessary.

References

https://camunda.slack.com/archives/C0350959WG1/p1713945828541659