🔧 Fix: Comprehensive GitHub token integration for all Docker workflows

✨ Complete GitHub Token Support:
- Add github-token parameter to all Trivy actions (security + release)
- Add GITHUB_TOKEN environment variable to all Docker build steps
- Add global GITHUB_TOKEN environment to CI and release workflows
- Ensure consistent token usage across all workflow jobs

🐳 Docker Workflow Improvements:
- CI workflow: Docker build with GitHub token for base image pulls
- Security workflow: Docker build + Trivy scans with token
- Release workflow: Docker build + security scans with token
- Better authentication for all container operations

 Authentication Benefits:
- Eliminates GitHub API rate limiting issues
- Fixes 'Bad credentials' errors in Trivy scans
- Improves reliability of Docker base image pulls
- Ensures consistent authentication across all workflows

 Affected Workflows:
- CI/CD Pipeline: Enhanced Docker builds
- Security Scans: Fixed Trivy authentication
- Release Pipeline: Complete token integration

.gitea/workflows/ci.yml

@@ -13,6 +13,8 @@ env:
   PYTHON_VERSION: '3.11'
   REGISTRY: git.b4l.co.th
   IMAGE_NAME: b4l/northern-thailand-ping-river-monitor
+  # GitHub token for better rate limits and authentication
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
 jobs:
   # Test job
@@ -164,6 +166,8 @@ jobs:
         labels: ${{ steps.meta.outputs.labels }}
         cache-from: type=gha
         cache-to: type=gha,mode=max
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         
     - name: Test Docker image
       run: |