add env files for api and docker-compose update

docker-compose.yml

@@ -14,6 +14,20 @@ services:
     extra_hosts: # https://stackoverflow.com/a/67158212/1106908
       - "host.docker.internal:host-gateway"
 
+  api:
+    build: api
+    ports:
+      - "20081:80"
+    environment:
+      - PHP_ENABLE_XDEBUG=1
+    volumes:
+      # Re-use local composer cache via host-volume
+      - ~/.composer-docker/cache:/root/.composer/cache:delegated
+      # Mount source-code for development
+      - ./:/app
+    extra_hosts: # https://stackoverflow.com/a/67158212/1106908
+      - "host.docker.internal:host-gateway"
+
   mysql:
     image: mysql:8
     environment: