Makes config copying idempotent

Given we have following paths:

/bin/ # directory
/scripts/config/my/con/fig.conf

When we are copying directory via `cp -a foo/script/config /bin/config`
We get new file with following path:

/bin/config/my/con/fig.conf

But if we run that script again when '/bin/config/` is already present
we would get another file with path:

/bin/config/config/my/con/fig.conf

This commit makes second and consecutive runs of script overwrite same file

bin/compile

@@ -25,8 +25,7 @@ fetch_nginx_tarball() {
 mkdir -p $build_dir/bin
 $(fetch_nginx_tarball) | tar xzC $build_dir/bin
 nginx_version=$($build_dir/bin/nginx-$STACK -V 2>&1 | head -1 | awk '{ print $NF }')
-cp -a $bp_dir/scripts/boot $build_dir/bin/boot
-cp -a $bp_dir/scripts/config $build_dir/bin/config
+cp -a $bp_dir/scripts/{boot,config} -t $build_dir/bin/
 echo "-----> Installed ${nginx_version} to /app/bin"
 
 mkdir -p $build_dir/config