fix: sqlc schema path to absolute path for Docker build

sqlc.yaml

@@ -2,7 +2,7 @@ version: '2'
 sql:
   - engine: 'sqlite'
     queries: 'internal/db/queries.sql'
-    schema: 'internal/database/migrations/'
+    schema: '/app/internal/database/migrations/'
     gen:
       go:
         package: 'db'