ci: use docker cli instead of kaniko

.woodpecker.yml

@@ -3,22 +3,14 @@ when:
   event: push
 
 steps:
-  - name: build-and-push
-    image: registry.nxtgauge.com/kaniko:2.1.1
-    settings:
-      registry: registry.nxtgauge.com
-      repo: nxtgauge-ai-assistant
-      dockerfile: Dockerfile
-      tags:
-        - ${CI_COMMIT_SHA}
-        - latest
-        - high-performance-latest
-      username:
+  - name: login-and-push
+    image: docker:28-cli
+    environment:
+      REGISTRY_USERNAME:
         from_secret: REGISTRY_USERNAME
-      password:
+      REGISTRY_PASSWORD:
         from_secret: REGISTRY_PASSWORD
-      insecure: true
-      insecure_pull: true
-      skip_tls_verify: true
-      platforms: linux/amd64
-      cache: false
+    commands:
+      - echo "${REGISTRY_PASSWORD}" | docker login registry.nxtgauge.com -u "${REGISTRY_USERNAME}" --password-stdin
+      - docker build -t registry.nxtgauge.com/nxtgauge-ai-assistant -f Dockerfile .
+      - docker push registry.nxtgauge.com/nxtgauge-ai-assistant