fix: restore backend as an array for compatibility

Signed-off-by: axel7083 <[email protected]>

Author: axel7083

CONTRIBUTING.md

@@ -43,7 +43,8 @@ application:
       contextdir: ../../../model_servers/llamacpp_python
       containerfile: ./base/Containerfile
       model-service: true
-      backend: llama-cpp
+      backend: 
+        - llama-cpp
       arch:
         - arm64
         - amd64

recipes/audio/audio_to_text/ai-lab.yaml

@@ -8,7 +8,8 @@ application:
       contextdir: ../../../model_servers/whispercpp
       containerfile: ./base/Containerfile
       model-service: true
-      backend: whisper-cpp
+      backend:
+        - whisper-cpp
       arch:
         - arm64
         - amd64

recipes/computer_vision/object_detection/ai-lab.yaml

@@ -8,7 +8,8 @@ application:
       contextdir: ../../../model_servers/object_detection_python
       containerfile: ./base/Containerfile
       model-service: true
-      backend: pytorch
+      backend:
+        - pytorch
       arch:
         - arm64
         - amd64

recipes/multimodal/image_understanding/ai-lab.yaml

@@ -7,7 +7,8 @@ application:
       contextdir: ../../../model_servers/llamacpp_python
       containerfile: ./base/Containerfile
       model-service: true
-      backend: llama-cpp
+      backend:
+        - llama-cpp
       arch:
         - arm64
         - amd64

recipes/natural_language_processing/chatbot/ai-lab.yaml

@@ -8,7 +8,8 @@ application:
       contextdir: ../../../model_servers/llamacpp_python
       containerfile: ./base/Containerfile
       model-service: true
-      backend: llama-cpp
+      backend:
+        - llama-cpp
       arch:
         - arm64
         - amd64

recipes/natural_language_processing/codegen/ai-lab.yaml

@@ -8,7 +8,8 @@ application:
       contextdir: ../../../model_servers/llamacpp_python
       containerfile: ./base/Containerfile
       model-service: true
-      backend: llama-cpp
+      backend:
+        - llama-cpp
       arch:
         - arm64
         - amd64

recipes/natural_language_processing/rag/ai-lab.yaml

@@ -8,7 +8,8 @@ application:
       contextdir: ../../../model_servers/llamacpp_python
       containerfile: ./base/Containerfile
       model-service: true
-      backend: llama-cpp
+      backend:
+        - llama-cpp
       arch:
         - arm64
         - amd64

recipes/natural_language_processing/summarizer/ai-lab.yaml

@@ -8,7 +8,8 @@ application:
       contextdir: ../../../model_servers/llamacpp_python
       containerfile: ./base/Containerfile
       model-service: true
-      backend: llama-cpp
+      backend:
+        - llama-cpp
       arch:
         - arm64
         - amd64