docker: prepare compose for multiple test instances

docker-compose.yml

@@ -1,28 +1,28 @@
 services:
   #nginx webserver + php 8.x
   web:
-      build:
-        context: .
-        dockerfile: ./docker/nginx/Dockerfile
-      ports:
-        - "9091:80"
-      depends_on:
-        - leftypol-db
-      volumes:
-          - ./local-www:/var/www/html
-          - ./docker/nginx/leftypol.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
+    build:
+      context: .
+      dockerfile: ./docker/nginx/Dockerfile
+    ports:
+      - "9091:80"
+    depends_on:
+      - leftypol-db
+    volumes:
+      - ./local-instances/1/www:/var/www/html
+      - ./docker/nginx/leftypol.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-www:/var/www
-          - ./docker/php/www.conf:/usr/local/etc/php-fpm.d/www.conf
+    build:
+      context: .
+      dockerfile: ./docker/php/Dockerfile
+    volumes:
+      - ./local-instances/1/www:/var/www
+      - ./docker/php/www.conf:/usr/local/etc/php-fpm.d/www.conf
 
   #MySQL Service
   leftypol-db:
@@ -36,3 +36,5 @@ services:
       MYSQL_DATABASE: vichan
       MYSQL_ROOT_PASSWORD: password
     command: "--default-authentication-plugin=mysql_native_password"
+    volumes:
+      - ./local-instances/1/mysql:/var/lib/mysql