make sure docker build does not include outdated tools
make sure docker build does not include outdated tools

using something like rsync -au --delete would be nicer
but i don't want to assume we have rsync available in CI.

raintank/metrictank,raintank/raintank-metric,raintank/raintank-metric,raintank/metrictank,raintank/metrictank,replay/metrictank,replay/metrictank,replay/metrictank,raintank/raintank-metric,replay/metrictank,raintank/metrictank