Update Docker syntax.

Author: Crell

Makefile

@@ -1,13 +1,13 @@
-compose_command = docker-compose run -u $(id -u ${USER}):$(id -g ${USER}) --rm php81
+compose_command = docker compose run -u $(id -u ${USER}):$(id -g ${USER}) --rm php81
 
 build:
-	docker-compose build
+	docker compose build
 
 shell: build
 	$(compose_command) bash
 
 destroy:
-	docker-compose down -v
+	docker compose down -v
 
 composer: build
 	$(compose_command) composer install

docker-compose.yml

@@ -5,7 +5,6 @@
 # Run "docker-compose down -v" to fully wipe everything and start over.
 # Run "docker-compose run -u $(id -u ${USER}):$(id -g ${USER}) --rm php80 bash" to log into the container to run tests selectively.
 
-version: "3"
 services:
     php81:
         build: ./docker/php/81