fix: hardcode registry with port 5000

.woodpecker.yml

@@ -32,8 +32,7 @@ steps:
   - name: build-and-push
     image: woodpeckerci/plugin-kaniko:2.1.1
     settings:
-      registry:
-        from_secret: REGISTRY_HOSTPORT
+      registry: registry.nxtgauge.com:5000
       repo: nxtgauge-rust-${SERVICE}
       dockerfile: Dockerfile.simple
       build_args:
@@ -61,8 +60,7 @@ steps:
   - name: build-and-push-migrate
     image: woodpeckerci/plugin-kaniko:2.1.1
     settings:
-      registry:
-        from_secret: REGISTRY_HOSTPORT
+      registry: registry.nxtgauge.com:5000
       repo: nxtgauge-db-migrate
       dockerfile: Dockerfile.migrate
       context: .