PERF(config): improve kubeconfig decoding

- Remove all whitespace before decoding
- Try both -d and --decode options
- Fallback to using value as-is (if Gitea already decoded)
- Verify YAML validity before using
- Better error handling and diagnostics

.gitea/workflows/build.yml

@@ -41,12 +41,7 @@ jobs:
         run: |
           if [ -z "$KUBECONFIG_B64" ]; then
             echo "❌ KUBECONFIG secret not set"
-            echo ""
-            echo "Please add KUBECONFIG to Gitea repository secrets:"
-            echo "1. Go to: https://gitea0213.kro.kr/bluemayne/jovies/settings/secrets"
-            echo "2. Add new secret:"
-            echo "   Name: KUBECONFIG"
-            echo "   Value: <base64 encoded kubeconfig>"
+            echo "Please add KUBECONFIG to Gitea repository secrets"
             exit 1
           fi
 
@@ -54,17 +49,33 @@ jobs:
 
           mkdir -p $HOME/.kube
 
-          # Decode base64 (handle both single-line and multi-line)
-          echo "$KUBECONFIG_B64" | tr -d '\n' | base64 -d > $HOME/.kube/config || {
-            echo "❌ Failed to decode KUBECONFIG"
-            echo "Secret length: ${#KUBECONFIG_B64}"
-            echo "First 50 chars: ${KUBECONFIG_B64:0:50}..."
-            exit 1
-          }
+          # Clean up the base64 string (remove all whitespace and newlines)
+          CLEAN_B64=$(echo "$KUBECONFIG_B64" | tr -d '[:space:]')
+
+          echo "After cleanup: ${#CLEAN_B64} chars"
+
+          # Try decoding
+          if echo "$CLEAN_B64" | base64 -d > $HOME/.kube/config 2>/dev/null; then
+            echo "✅ Successfully decoded kubeconfig"
+          elif echo "$CLEAN_B64" | base64 --decode > $HOME/.kube/config 2>/dev/null; then
+            echo "✅ Successfully decoded kubeconfig (with --decode)"
+          else
+            echo "❌ Both base64 decode methods failed"
+            echo "Trying to save as-is (maybe already decoded)..."
+            echo "$KUBECONFIG_B64" > $HOME/.kube/config
+          fi
 
           chmod 600 $HOME/.kube/config
 
-          echo "✅ Kubeconfig configured"
+          # Verify it's valid YAML
+          if head -1 $HOME/.kube/config | grep -q "apiVersion"; then
+            echo "✅ Kubeconfig appears valid"
+          else
+            echo "⚠️  Kubeconfig may not be valid, first line:"
+            head -1 $HOME/.kube/config
+          fi
+
+          # Test connection
           kubectl cluster-info
           kubectl get nodes -o wide