Add note about brew dependency in `build-cli-bin`
Homebrew/homebrew-core#36957 introduces a brew formula for the linkerd
cli. It depends on `bin/build-cli-bin` to build a local linkerd cli
binary.
This change adds a note to `bin/build-cli-bin`, to consider brew when
making changes to that script.
set -eu
# Builds CLI binary for current platform only and outside docker to speed up things. Suitable for local development.
+# Note: This script is used by Brew when running `brew install linkerd`:
+# https://github.com/Homebrew/homebrew-core/pull/36957
bindir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
rootdir="$( cd $bindir/.. && pwd )"
