docker: use modern compose file naming scheme

compose.yml

@@ -0,0 +1,40 @@
+services:
+  #nginx webserver + php 8.x
+  web:
+    build:
+      context: .
+      dockerfile: ./docker/nginx/Dockerfile
+    ports:
+      - "9090:80"
+    depends_on:
+      - db
+    volumes:
+      - ./local-instances/${LOCAL_INSTANCE_NAME:-0}/www:/var/www/html
+      - ./docker/nginx/vichan.conf:/etc/nginx/conf.d/default.conf
+      - ./docker/nginx/nginx.conf:/etc/nginx/nginx.conf
+      - ./docker/nginx/proxy.conf:/etc/nginx/conf.d/proxy.conf
+    links:
+      - php
+
+  php:
+    build:
+      context: .
+      dockerfile: ./docker/php/Dockerfile
+    volumes:
+      - ./local-instances/${LOCAL_INSTANCE_NAME:-0}/www:/var/www
+      - ./docker/php/www.conf:/usr/local/etc/php-fpm.d/www.conf
+      - ./docker/php/jit.ini:/usr/local/etc/php/conf.d/jit.ini
+
+  #MySQL Service
+  db:
+    image: mysql:8.0.35
+    container_name: db
+    restart: unless-stopped
+    tty: true
+    ports:
+      - "3306:3306"
+    environment:
+      MYSQL_DATABASE: vichan
+      MYSQL_ROOT_PASSWORD: password
+    volumes:
+      - ./local-instances/${LOCAL_INSTANCE_NAME:-0}/mysql:/var/lib/mysql