Add beakerlib to Dockerfile.test

Also kill the lorax-composer process and remove /run/weldr/api.socket
so that when this is run with podman you don't get an error about
attempting to tar up the socket.

Related: rhbz#1613058

tests/test_cli.sh

@@ -19,6 +19,10 @@ done;
 ./tests/cli/test_blueprints_sanity.sh
 ./tests/cli/test_compose_sanity.sh
 
+# Stop lorax-composer and remove /run/weldr/api.socket
+pkill -9 lorax-composer
+rm -f /run/weldr/api.socket
+
 # look for failures
 grep RESULT_STRING /var/tmp/beakerlib-*/TestResults | grep -v PASS && exit 1