ci: switch to kaniko for daemonless build

.gitea/workflows/mcp-build.yaml

@@ -4,16 +4,22 @@ on: [push]
 jobs:
   build-mcp-filesystem:
     runs-on: ubuntu-latest
+    env:
+      DOCKER_HOST: tcp://172.17.0.1:2375
     steps:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+      - name: Build and push MCP Filesystem (Kaniko)
+        run: |
+          JOB_CONTAINER=$(docker ps --format '{{.Names}}' | grep 'GITEA-ACTIONS-TASK' | head -1)
+          echo "Using volumes from: $JOB_CONTAINER"
 
-      - name: Build and push MCP Filesystem
-        uses: docker/build-push-action@v4
-        with:
-          context: ./tools-mcp/mcp-filesystem
-          push: true
-          tags: 192.168.8.250:5000/agentic-os/mcp-filesystem:latest
+          docker run --rm \
+            --volumes-from "$JOB_CONTAINER" \
+            gcr.io/kaniko-project/executor:latest \
+              --context=dir:///workspace/deepkoluguri/agentic-os/tools-mcp/mcp-filesystem \
+              --dockerfile=Dockerfile \
+              --destination=192.168.8.250:5000/agentic-os/mcp-filesystem:latest \
+              --insecure \
+              --skip-tls-verify