make workspace mount independent from a user name

ai/ai-starter-kit/helm-chart/ai-starter-kit/files/welcome.ipynb

@@ -52,8 +52,8 @@
     "]\n",
     "input_texts = queries + documents\n",
     "\n",
-    "tokenizer = AutoTokenizer.from_pretrained('/tmp/models-cache/Qwen/Qwen3-Embedding-0.6B', padding_side='left')\n",
-    "model = AutoModel.from_pretrained('/tmp/models-cache/Qwen/Qwen3-Embedding-0.6B')\n",
+    "tokenizer = AutoTokenizer.from_pretrained('Qwen/Qwen3-Embedding-0.6B', padding_side='left')\n",
+    "model = AutoModel.from_pretrained('Qwen/Qwen3-Embedding-0.6B')\n",
     "\n",
     "# We recommend enabling flash_attention_2 for better acceleration and memory saving.\n",
     "# model = AutoModel.from_pretrained('Qwen/Qwen3-Embedding-0.6B', attn_implementation=\"flash_attention_2\", torch_dtype=torch.float16).cuda()\n",

ai/ai-starter-kit/helm-chart/ai-starter-kit/values-gke.yaml

@@ -1,6 +1,6 @@
 jupyterhub:
   nameOverride: "jupyterhub"
-  # This value has to be null in order apply release name on this chart's resources.
+  # This value has to be null in order to apply release name on this chart's resources.
   # https://github.com/jupyterhub/zero-to-jupyterhub-k8s/blob/b4b51301ac886511c643cc5d428b15ff38006bee/jupyterhub/values.yaml#L1
   fullnameOverride:
 

ai/ai-starter-kit/helm-chart/ai-starter-kit/values-minikube.yaml

@@ -1,6 +1,6 @@
 jupyterhub:
   nameOverride: "jupyterhub"
-  # This value has to be null in order apply release name on this chart's resources.  
+  # This value has to be null in order to apply release name on this chart's resources.
   # https://github.com/jupyterhub/zero-to-jupyterhub-k8s/blob/b4b51301ac886511c643cc5d428b15ff38006bee/jupyterhub/values.yaml#L1
   fullnameOverride: 
 
@@ -20,7 +20,7 @@ jupyterhub:
         volumeMounts:
           - name: home
             mountPath: /home/jovyan
-            subPath: admin
+            subPath: jupyterhub_workspace
 
       - name: model-initializer
         image: jupyterhub/k8s-singleuser-sample:4.2.0
@@ -49,7 +49,7 @@ jupyterhub:
             readOnly: true
           - name: home
             mountPath: /home/jovyan
-            subPath: admin
+            subPath: jupyterhub_workspace
           - name: "download-models-py" 
             mountPath: /tmp/download_models.py
             subPath: download_models.py
@@ -66,7 +66,7 @@ jupyterhub:
       type: static
       static:
         pvcName: "ai-starter-kit-models-cache-pvc"
-        subPath: "{username}"
+        subPath: "jupyterhub_workspace"
       capacity: 20Gi
       homeMountPath: /home/jovyan
       extraVolumes:

ai/ai-starter-kit/helm-chart/ai-starter-kit/values.yaml

@@ -1,6 +1,6 @@
 jupyterhub:
   nameOverride: "jupyterhub"
-  # This value has to be null in order apply release name on this chart's resources.
+  # This value has to be null in order to apply release name on this chart's resources.
   # https://github.com/jupyterhub/zero-to-jupyterhub-k8s/blob/b4b51301ac886511c643cc5d428b15ff38006bee/jupyterhub/values.yaml#L1
   fullnameOverride: