fix: install jq and use Docker host IP for webhook trigger

The webhook trigger was failing with two issues:
1. jq command not found in node:20-bookworm runner container
2. localhost:9000 doesn't resolve from inside container

The issue:
- Runner containers don't have jq installed by default
- localhost within a container refers to the container, not the host
- Webhook service is listening on host at port 9000

Solution:
- Install jq package before using it (apt-get install)
- Dynamically get Docker host IP using 'ip route' gateway
- Construct JSON payload with jq to handle multiline messages
- Call webhook using http://{HOST_IP}:9000/hooks/basil-deploy

This will successfully trigger deployment to pull Harbor images.

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

.gitea/workflows/main.yml

@@ -390,16 +390,26 @@ jobs:
     steps:
       - name: Trigger webhook
         run: |
-          jq -n \
+          # Install jq for JSON construction
+          apt-get update -qq && apt-get install -y -qq jq > /dev/null 2>&1
+
+          # Get Docker host IP (gateway of the container network)
+          HOST_IP=$(ip route | grep default | awk '{print $3}')
+          echo "Using host IP: $HOST_IP"
+
+          # Construct JSON payload with jq to properly escape multiline commit messages
+          PAYLOAD=$(jq -n \
             --arg branch "main" \
             --arg commit "${{ github.sha }}" \
             --arg message "${{ github.event.head_commit.message }}" \
             --arg tag "${{ needs.docker-build-and-push.outputs.image_tag }}" \
-            '{branch: $branch, commit: $commit, message: $message, tag: $tag}' | \
+            '{branch: $branch, commit: $commit, message: $message, tag: $tag}')
-          curl -X POST ${{ secrets.WEBHOOK_URL }} \
+
+          # Trigger webhook on Docker host
+          curl -X POST "http://${HOST_IP}:9000/hooks/basil-deploy" \
             -H "Content-Type: application/json" \
             -H "X-Webhook-Secret: ${{ secrets.WEBHOOK_SECRET }}" \
-            -d @- || echo "Webhook call failed, but continuing..."
+            -d "$PAYLOAD" || echo "Webhook call failed, but continuing..."
 
       - name: Deployment triggered
         run: |