Update docker-compose.ci.yml to use the correct folder for building

docker-compose.ci.yml

 version: "3"
 services:
   web:
-    build: ./the_social_network
+    build: ./social_network
     image: ${REGISTRY}/feger/the-social-network/web:latest
     volumes:
-      - ./the_social_network:/code
\ No newline at end of file
+      - ./social_network:/code