makefile: fix build-docker-localnode target (#3122)
makefile: fix build-docker-localnode target (#3122)

cd does not work because it's executed in a subprocess
so it has to be either chained by && or ;
See https://stackoverflow.com/q/1789594/820520
for more details.

Fixes #3058
tendermint/tendermint,tendermint/tendermint,tendermint/tendermint,tendermint/tendermint