fix: update build workflow default branch to staging

- Change default branch from 'main' to 'staging'
- Add choice input type for branch selection
- Add debug check for RUNTIME_IMAGE_NAME
- Remove unused env variable

.gitea/workflows/build-image.yml

@@ -13,7 +13,12 @@ on:
       branch:
         description: 'Branch to build from'
         required: false
-        default: 'main'
+        type: choice
+        options:
+          - staging
+          - main
+          - develop
+        default: 'staging'
       force_build:
         description: 'Force image build even if no runtime changes detected'
         type: boolean
@@ -46,7 +51,7 @@ jobs:
             REF="${{ github.ref_name }}"
           fi
           if [ -z "$REF" ]; then
-            REF="${{ inputs.branch || 'main' }}"
+            REF="${{ inputs.branch || 'staging' }}"
           fi
           URL="https://git.michaelschiemer.de/${{ github.repository }}/raw/${REF}/scripts/ci/clone_repo.sh"
           mkdir -p /tmp/ci-tools
@@ -79,7 +84,7 @@ jobs:
             REF_NAME="$INPUT_BRANCH"
           fi
           if [ -z "$REF_NAME" ]; then
-            REF_NAME="main"
+            REF_NAME="staging"
           fi
 
           REPO="${{ github.repository }}"
@@ -204,8 +209,6 @@ jobs:
     outputs:
       image_ref: ${{ steps.set-result.outputs.image_ref }}
       built: ${{ steps.set-result.outputs.built }}
-    env:
-      RUNTIME_IMAGE_NAME: ${{ env.RUNTIME_IMAGE_NAME }}
     steps:
       - name: Download CI helpers
         shell: bash
@@ -218,7 +221,7 @@ jobs:
             REF="${{ github.ref_name }}"
           fi
           if [ -z "$REF" ]; then
-            REF="${{ inputs.branch || 'main' }}"
+            REF="${{ inputs.branch || 'staging' }}"
           fi
           URL="https://git.michaelschiemer.de/${{ github.repository }}/raw/${REF}/scripts/ci/clone_repo.sh"
           mkdir -p /tmp/ci-tools
@@ -377,6 +380,12 @@ jobs:
 
           echo "TARGET_REGISTRY=$TARGET_REGISTRY" >> $GITHUB_ENV
 
+          # Debug: Check if RUNTIME_IMAGE_NAME is set
+          if [ -z "$RUNTIME_IMAGE_NAME" ]; then
+            echo "⚠️  RUNTIME_IMAGE_NAME is not set, using default: framework-runtime"
+            RUNTIME_IMAGE_NAME="framework-runtime"
+          fi
+
           IMAGE_NAME="$RUNTIME_IMAGE_NAME"
 
           echo "🏗️ Building runtime base image..."
@@ -431,7 +440,7 @@ jobs:
             REF="${{ github.ref_name }}"
           fi
           if [ -z "$REF" ]; then
-            REF="${{ inputs.branch || 'main' }}"
+            REF="${{ inputs.branch || 'staging' }}"
           fi
           URL="https://git.michaelschiemer.de/${{ github.repository }}/raw/${REF}/scripts/ci/clone_repo.sh"
           mkdir -p /tmp/ci-tools
@@ -520,7 +529,7 @@ jobs:
             REF="${{ github.ref_name }}"
           fi
           if [ -z "$REF" ]; then
-            REF="${{ inputs.branch || 'main' }}"
+            REF="${{ inputs.branch || 'staging' }}"
           fi
           URL="https://git.michaelschiemer.de/${{ github.repository }}/raw/${REF}/scripts/ci/clone_repo.sh"
           mkdir -p /tmp/ci-tools