baseimage: use COPY instead of ADD, rename scripts to build/scripts
apt-cacher-ng: use COPY instead of ADD, rename scripts to build/scripts
es-kibana: use COPY instead of ADD, rename scripts to build/scripts
fluentd-ui: use COPY instead of ADD, rename scripts to build/scripts
pb: use COPY instead of ADD, use minimum2scp/baseimage instead of minimum2scp/systemd
sphinx: use COPY instead of ADD, rename scripts to build/scripts
squid: use COPY instead of ADD, rename scripts to build/scripts
systemd: use COPY instead of ADD, rename scripts to build/scripts
tdiary: use COPY instead of ADD, rename scripts to build/scripts