Update Dockerfile (#3659)

Author: Itxaka

images/Dockerfile

@@ -1,5 +1,5 @@
 ARG BASE_IMAGE=ubuntu:20.04
-ARG KAIROS_INIT=v0.5.18
+ARG KAIROS_INIT=v0.5.20
 
 FROM quay.io/kairos/kairos-init:${KAIROS_INIT} AS kairos-init
 

tests/install_test.go

@@ -168,7 +168,6 @@ users:
     - "admin"
 `, vm)
 				Expect(out).ToNot(ContainSubstring("kairos-agent.service: Failed with result"))
-				Expect(out).To(ContainSubstring("WARNING: Couldn't fetch config_url"))
 
 				Eventually(func() string {
 					out, err := vm.Sudo("kairos-agent state")