update yaml examples (tests) to use command

now with entrypoint, steps should specify the command in the command
field and not in the args

examples/taskruns/taskrun-cluster-task.yaml

@@ -14,7 +14,8 @@ spec:
     ]
   - name: dump-buildfile
     image: ubuntu
-    args: ["cat", "/workspace/another-directory/BUILD"]
+    command: ["cat"]
+    args: ["/workspace/another-directory/BUILD"]
 ---
 apiVersion: tekton.dev/v1alpha1
 kind: TaskRun

examples/taskruns/taskrun-git-source.yaml

@@ -47,7 +47,8 @@ spec:
   steps:
   - name: dump-workspace
     image: ubuntu
-    args: ["cat", "/workspace/gitspace/WORKSPACE"]
+    command: ["cat"]
+    args: ["/workspace/gitspace/WORKSPACE"]
 ---
 apiVersion: tekton.dev/v1alpha1
 kind: TaskRun

examples/taskruns/taskrun-home-volume.yaml

@@ -13,7 +13,8 @@ spec:
       args: ['-c', 'echo some stuff > /builder/home/stuff']
     - name: read
       image: ubuntu
-      args: ['cat', '/builder/home/stuff']
+      command: ['cat']
+      args: ['/builder/home/stuff']
     - name: override-homevol
       image: ubuntu
       command: ['bash']

examples/taskruns/taskrun-secret-volume.yaml

@@ -14,11 +14,11 @@ spec:
     steps:
     - name: secret
       image: ubuntu
-      args: ["cat", "/var/secret/ninja"]
+      command: ["cat"] 
+      args: ["/var/secret/ninja"]
       volumeMounts:
       - name: secret-volume
         mountPath: /var/secret
-
     volumes:
     - name: secret-volume
       secret:

examples/taskruns/taskrun-unnamed-steps.yaml

@@ -6,8 +6,8 @@ spec:
   taskSpec:
     steps:
     - image: 'ubuntu'
-      args: ['true']
+      command: ['true']
     - image: 'ubuntu'
-      args: ['true']
+      command: ['true']
     - image: 'ubuntu'
-      args: ['true']
+      command: ['true']

examples/taskruns/taskrun-volume-secret-args.yaml

@@ -17,7 +17,8 @@ spec:
   steps:
   - name: read
     image: ubuntu
-    args: ["cat", "/secretpath/ninja"]
+    command: ["cat"]
+    args: ["/secretpath/ninja"]
     volumeMounts:
     - name: custom
       mountPath: /secretpath

examples/taskruns/taskrun-workspace.yaml

@@ -11,7 +11,8 @@ spec:
       args: ['-c', 'echo some stuff > /workspace/stuff']
     - name: read
       image: ubuntu
-      args: ['cat', '/workspace/stuff']
+      command: ['cat']
+      args: ['/workspace/stuff']
 
     - name: override-workspace
       image: ubuntu