feat: add xz-utils in container image for CONFIG_IKHEADERS support

Author: alban

build/Dockerfile.tracerunner

@@ -13,6 +13,9 @@ RUN make _output/bin/trace-runner
 
 FROM ubuntu:19.10
 
+RUN apt-get update
+RUN apt-get install -y xz-utils
+
 COPY --from=gobuilder /go/src/github.com/iovisor/kubectl-trace/_output/bin/trace-runner /bin/trace-runner
 COPY --from=bpftrace /usr/bin/bpftrace /usr/bin/bpftrace