fix: simplify build workflow YAML syntax

- Use 'command' and 'args' instead of multiline command
- Use quoted heredoc delimiter to prevent variable expansion
- Simplify clone and build scripts

.gitea/workflows/build.yaml

@@ -16,7 +16,7 @@ jobs:
         kubectl delete job build-manoon-headless-action -n gitea --ignore-not-found=true 2>/dev/null || true
         
         # Create build job
-        kubectl apply -f - << EOF
+        cat << 'JOBEOF' | kubectl apply -f -
         apiVersion: batch/v1
         kind: Job
         metadata:
@@ -30,24 +30,14 @@ jobs:
               initContainers:
               - name: clone
                 image: alpine/git:latest
-                command:
-                - sh
-                - -c
+                workingDir: /workspace
+                command: ["/bin/sh", "-c"]
+                args:
                 - |
                   set -ex
                   echo "Cloning repository..."
                   rm -rf /workspace/* /workspace/.[!.]* 2>/dev/null || true
-                  CLONE_OUTPUT=$(git clone --depth 1 http://gitea.gitea.svc.cluster.local:3000/unchained/manoon-headless.git /workspace 2>&1)
-                  CLONE_EXIT_CODE=$?
-                  echo "$CLONE_OUTPUT"
-                  if [ $CLONE_EXIT_CODE -ne 0 ]; then
-                    echo "ERROR: Clone failed with exit code $CLONE_EXIT_CODE"
-                    exit 1
-                  fi
-                  if [ ! -d /workspace/.git ]; then
-                    echo "ERROR: Clone failed - .git directory not found"
-                    exit 1
-                  fi
+                  git clone --depth 1 http://gitea.gitea.svc.cluster.local:3000/unchained/manoon-headless.git /workspace
                   cd /workspace
                   echo "Successfully cloned: $(git rev-parse --short HEAD)"
                 volumeMounts:
@@ -56,9 +46,8 @@ jobs:
               containers:
               - name: build
                 image: moby/buildkit:latest
-                command:
-                - sh
-                - -c
+                command: ["/bin/sh", "-c"]
+                args:
                 - |
                   set -e
                   mkdir -p /root/.docker
@@ -87,7 +76,7 @@ jobs:
               - name: docker-config
                 secret:
                   secretName: ghcr-pull-secret
-        EOF
+        JOBEOF
         
         echo "Build job created!"
         kubectl wait --for=condition=complete job/build-manoon-headless-action -n gitea --timeout=600s || echo "Build running in background"