Add Comment to docker compose project name (absmach#1895)

Signed-off-by: rodneyosodo <[email protected]>

Makefile

@@ -17,6 +17,7 @@ USER_REPO ?= $(shell git remote get-url origin | sed -e 's/.*\/\([^/]*\)\/\([^/]
 BRANCH ?= $(shell git rev-parse --abbrev-ref HEAD  2>/dev/null || git describe --tags --abbrev=0  2>/dev/null )
 empty:=
 space:= $(empty) $(empty)
+# Docker compose project name should follow this guidelines: https://docs.docker.com/compose/reference/#use--p-to-specify-a-project-name
 DOCKER_PROJECT ?= $(shell echo $(subst $(space),,$(USER_REPO)_$(BRANCH)) | tr -c -s '[:alnum:][=-=]' '_' | tr '[:upper:]' '[:lower:]')
 DOCKER_COMPOSE_COMMANDS_SUPPORTED := up down config
 DEFAULT_DOCKER_COMPOSE_COMMAND  := up