Support new docker compose version (#1497)

Currently the Makefile and `quickstart.sh` expect the [deprecated docker compose V1](https://docs.docker.com/compose/#compose-v2-and-the-new-docker-compose-command) syntax, `docker-compose`.
The new V2 syntax uses `docker compose` instead.

quickstart.sh

@@ -75,13 +75,28 @@ echo "      : Minimum required Docker version: $MIN_DOCKER_VER+"
 echo "      : Minimum required docker-compose version: $MIN_COMPOSE_VER+"
 echo "      : See the .travis build for the currently supported versions."
 echo "      : Your docker system:"
+
+if ! command -v docker-compose &> /dev/null; then
+  DOCKER_COMPOSE_HYPHEN=false
+else
+  DOCKER_COMPOSE_HYPHEN=true
+fi
+
+function docker_compose_command () {
+    if $DOCKER_COMPOSE_HYPHEN; then
+      docker-compose $@
+    else
+      docker compose $@
+    fi
+}
+
 docker         --version
-docker-compose --version
+docker_compose_command --version
 
 # based on: http://stackoverflow.com/questions/16989598/bash-comparing-version-numbers
 function version { echo "$@" | tr -d 'v' | tr -cs '0-9.' '.' | awk -F. '{ printf("%03d%03d%03d\n", $1,$2,$3); }'; }
 
-COMPOSE_VER=$(docker-compose version --short)
+COMPOSE_VER=$(docker_compose_command version --short)
 if [ "$(version "$COMPOSE_VER")" -lt "$(version "$MIN_COMPOSE_VER")" ]; then
   echo "ERR: Your Docker-compose version is known to have bugs, please update docker-compose!"
   exit 1
@@ -116,7 +131,7 @@ echo "      : Started          : $STARTDATE "
 echo "      : Your bash version: $BASH_VERSION"
 echo "      : Your OS          : $OSTYPE"
 docker         --version
-docker-compose --version
+docker_compose_command --version
 
 if [[ "$OSTYPE" == "linux-gnu" ]]; then
     echo " "