Configure docker-compose to build from git repository

Update build contexts to pull from git repository URL instead of
local directory. This allows Portainer to build images directly
from the repository without requiring SSH access to the server.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

docker-compose.yml

@@ -46,7 +46,7 @@ services:
   # =================================================================
   web:
     build:
-      context: .
+      context: https://git.firebugit.com/Firebug_IT/KeepItGoingServer.git#main
       dockerfile: Dockerfile
     container_name: keepitgoing-web
     restart: unless-stopped
@@ -103,7 +103,7 @@ services:
   # =================================================================
   celery-worker:
     build:
-      context: .
+      context: https://git.firebugit.com/Firebug_IT/KeepItGoingServer.git#main
       dockerfile: Dockerfile
     container_name: keepitgoing-celery-worker
     restart: unless-stopped
@@ -138,7 +138,7 @@ services:
   # =================================================================
   celery-beat:
     build:
-      context: .
+      context: https://git.firebugit.com/Firebug_IT/KeepItGoingServer.git#main
       dockerfile: Dockerfile
     container_name: keepitgoing-celery-beat
     restart: unless-stopped