docker-compose: build both images from source, bake frontend into nginx, use --build flag

deploy/docker-compose.yml

@@ -1,8 +1,8 @@
 services:
   backend:
     build:
-      context: .
-      dockerfile: Dockerfile
+      context: ../backend
+      dockerfile: ../deploy/Dockerfile
     container_name: project-tracker-api
     restart: unless-stopped
     volumes:
@@ -14,14 +14,13 @@ services:
       - project-tracker-net
 
   nginx:
-    image: nginx:alpine
+    build:
+      context: ../frontend
+      dockerfile: ../deploy/Dockerfile.nginx
     container_name: project-tracker-nginx
     restart: unless-stopped
     ports:
       - "80:80"
-    volumes:
-      - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro
-      - ../frontend:/usr/share/nginx/html:ro
     depends_on:
       - backend
     networks: